Sonic Adventure 4: Black Arms Rising/Story (Ch. 6-10)

This page features the second and last five chapters of the story mode for Sonic Adventure 4: Black Arms Rising.
For the previous five chapters, click here
For the last chapter, click here
== Chapter 6: Deception ==
After an underhanded attack by Dr. Eggman and Metal Sonic, Sonic and the others must find him and retrieve the Chaos Emeralds he has stolen. Meanwhile, Shadow and Rouge encounter Black Doom, who claims to know Shadow's past, but is this a trick?
The chapter begins with Sonic and the others recovering from being electrocuted by Metal Sonic. Sonic receives a call from Commander Tower who asks him about his status. Sonic tells him that Metal Sonic electrocuted them and he and Eggman took the Emeralds and are escaping into their base. Commander Tower is infuriated of hearing this and blames Sonic and the others for allowing themselves to trust Eggman. Sonic retorts that it was only temporary and says working for the Commander isn't any better either. Commander Tower then tells the heroes to retrieve the Emeralds that were stolen by Eggman and to eliminate the remaining Black Arms, and soon they went to find Eggman.
Meanwhile, Shadow is entering Prison Island. He looks around the area and it triggers his mind. He sees flashbacks of the events at Prison Island where he was freed by Eggman. Just then, Rouge comes to see him. Shadow asks her why is she here. She replies that she's out to look for the Chaos Emerald and thinks the two should work together to find it. Shadow, still fuzzy over his memories, accepts her help and the two set off. Rouge still tries to make sure the GUN mechs doesn't spot her helping Shadow.
Stage 	Prison Island (Act 2)
Mission 	Find the Chaos Emerald
Character	Shadow, Rouge
Allies 	G.U.N. (When playing as Rouge), Black Doom (When playing as Shadow)
Enemies 	Black Arms (When playing as Rouge), G.U.N. (When playing as Shadow)
Shadow and Rouge have successfully found the Chaos Emerald. Before they could set off, Black Doom appears before them. He introduces himself to Shadow and tells him that he knows his past and will show him what he means. Before Rouge asks what does he want with Shadow, Black Doom ignores her and teleports Shadow and himself to another location, leaving Rouge wondering. She notices that the Chaos Emerald is gone with Shadow. Just then, she receives a call from Commander Tower who is impatient with her for not answering for so long. Rouge tells her that the Emerald is gone missing with Black Doom, which frustrates him. Nonetheless, Commander Towers orders Rouge to meet with Sonic and the others at Egg Metropolis as they are on a mission to retrieve the Chaos Emeralds from Eggman. Rouge sets off to Egg Metropolis, but is still worried about Shadow.
Shadow and Black Doom appear in outer space. Black Doom shows Shadow the Space Colony ARK from afar. Black Doom explains that he was created there 50 years ago by Professor Gerald and then shows him an image of him running along with Maria from the GUN Soldiers. He also explains that he wants to demonstrate the massacre in the ARK.
Stage 	Lost Impact (Act 1)
Mission 	Help Maria escape
Character	Shadow
Enemies 	GUN
Shadow and Maria enter a room and are confronted by a GUN mech called Heavy Dog. Then, playing in Shadow's mind is a flashback of him and Maria inside the capsule room where the GUN soldiers are confronting them. A gunshot wounds Maria who screams in pain, and asks Shadow to help her before succumbing to her death. The flashback ends and Black Doom, who is on Maria's place beside Shadow, tells him of the corrupt nature of humanity, condemning them for sacrificing others for the satisfaction of their selfishness and cruelty. Shadow takes Doom's words to heart and declares to make humanity pay by destroy the Heavy Dog.
Boss 	Heavy Dog
Mission 	Destroy the Heavy Dog
Character	Shadow
After the battle, Shadow watches Heavy Dog being destroyed and the GUN soldier lying on the ground. Then much to his confusion, he is transported into the present. This time at an unknown forest. Black Doom commends Shadow on destroying the Heavy Dog and remarks that Professor Gerald has done more to him than expected. Shadow is confused about who is Prof. Gerald, but Black Doom tells him his memories will be regain soon and orders Shadow to destroy the core of the government's database. Shadow obeys, and Black Doom sends him to the database.
Stage 	Digital Circuit
Mission 	Destroy the core of the database
Character	Shadow
Allies 	Black Arms
Enemies 	GUN
(We switch back to Sonic and the others; this take place during Shadow and Rouge's meeting with Black Doom)
Adventure Field	Egg Metropolis
Mission 	Go inside the main tower
Characters 	Sonic, Tails, Knuckles, Amy, Cream, Big, Vector, Espio, Charmy, Mighty, Julie-Su
The heroes arrive inside the main tower. They realize that Dr. Eggman and Metal Sonic are nowhere to be found and neither are the Chaos Emeralds. Tails assumes that Eggman is hiding somewhere, and that they must find him someplace else. This means the heroes would have to look around the buildings to find him.
In the next scene, a montage plays where the heroes split into groups and search around the buildings for Eggman. The GUN mechs also helped. Unfortunately, Eggman isn't found. Some time later, the heroes return to meet with each other giving each other the bad news. Rouge arrives and tells them about her encounter with Black Doom, Black Doom knowing who Shadow is, and Shadow being taken to another location thanks to him. The heroes are confused as to how Doom knows Shadow. The conversation was cut short as Commander Tower informs the heroes that his men had discovered that Eggman is underground the caverns. Now the heroes set off to the caverns.
Adventure Field	Egg Metropolis
Mission 	Go into the caverns.
Characters 	Sonic, Tails, Knuckles, Amy, Cream, Big, Rouge, Vector, Espio, Charmy, Mighty, Julie-Su
Inside the laboratory are Dr. Eggman, Metal Sonic, Orbot, and Cubot. Eggman believes that he has outsmarted the heroes and GUN into thinking they have gone to the main tower, and that the Chaos Emeralds are secured. Orbot reminds him of Shadow and the 6th Chaos Emerald. Eggman then decides to contact him considering it's been several hours since he saw him. Before he could contact him, Eggman hears the siren blaring and that he is informed of intruders. He is outraged as he watches Sonic and the others arriving to the cavern. He sends an army to take out Sonic and the others.
Stage 	Magna Shelter Act 1
Mission 	Find Eggman
Character	Sonic, Tails, Knuckles, Amy, Cream, Big, Rouge, Vector, Espio, Charmy, Mighty, Julie-Su
Allies 	GUN
Enemies 	Eggman Empire
As Sonic and the others are intruding Eggman's underground lair, Shadow and Black Doom appear to Egg Metropolis after destroying the government database. Black Doom notes that he had invaded Egg Metropolis previously, but wasn't able to decimate it because Sonic and GUN had eliminated his army. Hearing the mentioning of Eggman's name, Shadow remembers about Eggman's order of collecting the Chaos Emeralds, but Black Doom tells him not to take orders from him anymore because Eggman, like humanity is selfish. He tells him that Eggman is using him to achieve is own ends and doesn't care about helping him regain his memories, which convinces Shadow. Doom orders Shadow to take the 5 Chaos Emeralds from him and destroy Egg Metropolis. Just then, Shadow receives a call from Dr. Eggman who orders him to hurry to the caverns below Egg Metropolis for an emergency. The scene ends with Shadow assuring Eggman that he will be there.
Adventure Field	Egg Metropolis
Mission 	Go into the caverns
Characters 	Shadow
Stage 	Magna Shelter Act 2
Mission 	Confront Eggman
Character	Shadow
Allies 	Black Arms
Enemies 	GUN
Meanwhile, Sonic and the others are confronted by an dragon-like robot Eggman sent. The heroes prepare for battle.
Boss 	Egg Dragon
Mission 	Destroy the Egg Dragon
Characters	Sonic, Tails, Knuckles, Amy, Cream, Big, Rouge, Vector, Espio, Charmy, Mighty, Julie-Su
Back at the laboratory, Dr. Eggman, Metal Sonic, Orbot, and Cubot are anticipating Shadow's return, and soon enough, Shadow appears. Eggman is delighted and orders him to return the 6th Chaos Emerald to the pod where the other 5 Emeralds are stored inside. Shadow does so, and breaks the pod open and takes the Emeralds, much to the shock of Eggman. Shadow says he plans on taking the Emeralds with him and that he will no longer take orders from Eggman anymore because he is using him to meet his own ends and doesn't care about regaining his memories. Disgusted at his defiance, Eggman orders Metal Sonic to attack him. Shadow dodges and attacks Metal Sonic. He goes on threatening to kill Eggman and then destroy Egg Metropolis. Just then, Metal Sonic recovers and attacks Shadow from behind. Eggman gets on his giant Egg-walker machine called the Egg Blazer and threatens to teach Shadow a lesson and take back the Emeralds.
Boss 	Egg Blazer & Metal Sonic
Mission 	Destroy the Egg Blazer
Characters	Shadow
Eggman and Metal Sonic are on the ground in defeat. Sonic and the others, who have returned after being hindered by some badniks, arrive in the laboratory and see Shadow standing over Eggman and Metal Sonic. They are surprised that he has done that. Sonic goes up to Shadow and asks him about Black Doom. Shadow ignores him and goes up to the control panel and presses the self-destruct button to destroy Egg Metropolis, much to the heroes' shock. As Shadow disappears, Sonic and the others, along with Eggman and his crew set to escape the caverns as it begins to explode.
The heroes escaped the base inside a GUN airship, and a massive explosion erupted Egg Metropolis. The heroes are still puzzled as to why would Shadow blow up Egg Metropolis with everyone in it. Rouge, still remembering Black Doom taking Shadow, assumes that he may be brainwashed. The characters discuss how to deal with the situation until Commander Tower informs the group that Shadow has disappeared with the 6 Chaos Emeralds and that he will send his soldiers to locate Shadow's location, and then orders the heroes to find and eliminate a group of Black Arms despite they aren't many of them like before. The cutscene ends with the airship departing from the now destroyed Egg Metropolis.
Meanwhile, Shadow and Black Doom appear in outer space again. Black Doom congratulates Shadow for destroying the Egg Metropolis and assures him that he will reveal his past very soon after they must do some preparations for the "prosperity ritual". Eclipse arrives on his ship to meet with the two; he also introduces himself to Shadow as this was his first time meeting him in person. Black Doom tells the two about their next plan to make a return attack to Central City, and turns his attention to the Space Colony ARK. The scene fades to black.
== Chapter 7: Back with a Vengeance ==
The Black Arms (alongside Shadow) are planning to return to Central City. This time, they are using a set of bombs to destroy it. Now the heroes must race against time to prevent them from exploding, but that is not the only thing they should be worried about...
The chapter begins picking up from the last scene where Shadow, Black Doom, and Eclipse are in outer space. Now they are looking at the ARK. Black Doom tells Shadow and Eclipse that they are planning on using the Eclipse Cannon to destroy a part of the world; he doesn't want to destroy it because he wants to eliminate the human race and take it over. He orders Shadow and Eclipse to go into the central control room to activate the Eclipse Cannon as the "prosperity ritual" is just no more than a day away. Shadow and Eclipse do so and the scene ends with Black Doom planning to send the Black Arms back to Central City.
Stage 	Space Gadget Act 1
Mission 	Infiltrate the ARK
Character	Shadow
Allies 	Black Arms
Enemies 	GUN
Adventure Field	Space Colony ARK
Mission 	Find the control room of the Eclipse Cannon
Character 	Shadow
Shadow, Black Doom, and Eclipse enter the Eclipse Cannon's control room (Shadow begins to experience flashbacks of him inside the room in Sonic Adventure 2). Black Doom informs the two that everything is going to plan as he already sent the Black Arms to Central City. He orders Eclipse to stay in the central control room to fire the Eclipse Cannon within an hour and that the rest of the Black Arms are guarding the ARK from GUN. He then orders Shadow to return to earth to assist the army of Black Arms at Central City. Shadow obeys and Black Doom teleports him back to earth.
Meanwhile, the President is sitting in his office, content that the threat of the Black Arms have been possibly countered. His mood changed when he receives a call from his secretary that the Black Arms are invading Central City again. The scene ends with the President looking outside his window, distraught of the news.
Somewhere at Blue Ridge Zone, Sonic and his friends have finished eliminating a group of Black Arms when they receive a call from Commander Tower who orders them to rush to Central City immediately as the Black Arms are arriving. Shocked as they have returned to Central City again, The heroes set off as quick as they can.
In the next cutscene, the Black Arms army have arrived to Central City. Black Doom, from the speakers, warns the citizens that in less than an hour, they will blow up Central City with various bombs. Far from a distance, Shadow is standing on top of a skyscraper accompanied by Doom's Eye. Doom motivates Shadow, telling him to inflict pain and suffering on the humans for what they have done to him in the past. With intent on severely harming humanity, Shadow runs down the building to begin his mission.
Meanwhile, Sonic and the other heroes arrive to Central City via the airship. Rouge notifies Commander Tower they have arrived, and the Commander informs the group that he's detected an army of Black Arms with Shadow being among them. The heroes are shocked hearing the news about Shadow. He also notifies that a number of bombs were set by the Black Arms and they will explode up in 45 minutes. The bombs are located in two specific areas - the city and the underground sewers. He orders the heroes to split into groups to deactivate the bombs while he sends his soldiers to deal with Shadow and the Black Arms. After hearing Commander Tower's orders, the heroes then decides to split into groups to shorten time - one group for Central City and the other for the sewers. Knuckles offers to go for Central City and picks Julie-Su, Vector, Espio, Charmy, and Mighty to come with him. This leaves Sonic, Tails, Amy, Cream, Rouge, and Big to go to the sewers. With that settled, the groups wish each other good luck and set off to stop the bombs.
Stage 	Boulevard Turmoil Act 1
Mission 	Eliminate 50 GUN Soldiers
Character	Shadow
Allies 	Black Arms
Enemies 	GUN
Shadow is confronted by a group of GUN soldiers who are ordered by Commander Tower to stop him. As they threaten to shoot him if he doesn't stop moving, Shadow promptly attacks them. Just then, a floating GUN mech also confronts Shadow. The soldier piloting the machine decides to finish the job.
Boss 	Blue Falcon
Mission 	Destroy the Blue Falcon
Character	Shadow
After defeating the Blue Falcon, Shadow is called by Black Doom to head to GUN's fleet that is far from Central City. Shadow obeys and leaves the city to find the fleet.
Stage 	Boulevard Turmoil Act 2
Mission 	Deactivate 4 Bombs
Characters	Knuckles, Vector, Espio, Charmy, Mighty, Julie-Su
Allies 	GUN
Enemies 	Black Arms
After deactivating the bombs in Central City, Knuckles, Vector, Espio, Charmy, Mighty, and Julie-Su set off to wait for the others. Then, they saw Shadow from a far heading out of Central City. They decide to go and catch up with him to get some answers from him.
Adventure Field	Central City
Mission 	Go to the subway station
Characters 	Sonic, Tails, Amy, Cream, Big, Rouge
Stage 	Crazy Terminal
Mission 	Deactivate 4 Bombs
Characters	Sonic, Tails, Amy, Cream, Big, Rouge
Allies 	GUN
Enemies 	Black Arms
After deactivating the bombs, Sonic and the others return from the subway station and find Fang, Bean, and Bark who are dealing with a group of Black Arms. Despite them being villains, they decide to help them out. As they eliminate the Black Arms, Fang expresses ingratitude for the heroes' rescue, but Bean tells the heroes that GUN orders them to eliminate the aliens and will give them a lighter prison sentence if they comply. Reluctantly, Sonic accept team Hooligan's help, but warns them no "funny business". Just then, Sonic receive a call from Knuckles who tells him that he and the others spotted Shadow departing Central City and are currently following him at the capital district. Sonic replies that they will find where they are at. So now the heroes, and Team Hooligan, go on to find the district.
Adventure Field	Central City
Mission 	Go to the capital district
Characters 	Sonic, Tails, Amy, Cream, Big, Rouge
In the next scene, Commander Tower, with two guards, enters the White House with the President looking grimly at the window. Commander Tower asks him to come with him to the fleet for safety as the Black Arms are approaching to the capital soon. The President, hearing this, admits defeat, but Commander Tower assures him that the fight is not over and that with Sonic and the others' help, they have a fighting chance and they must keep the nation united. In addition, he tells them that the heroes have already stopped the bombs from blowing up. Relieved of this, the President walks with the Commander and the guards to the fleet. What they didn't realize is that Black Doom and Shadow are watching as the fleet takes off. Black Doom orders Shadow and the Black Arms to go to the fleet and destroy it. Shadow gets on the Black Hawk and fly up to the fleet.
In the next scene, Knuckles, Vector, Espio, Charmy, Mighty, and Julie-Su spot Shadow flying up with the Black Hawk. Sonic, Tails, Amy, Cream, Big, and Rouge along with Team Hooligan meet with them. Knuckles and the others were surprised to see the bounty hunter trio, but Sonic explains they were forced to help them battle the Black Arms by GUN. Commander Tower calls the heroes that they must race to the fleet as some Black Arms are plotting to attack it. So they all set off to begin their mission.
Stage 	GUN Fleet Act 1
Mission 	Destroy 5 GUN Ships
Character	Shadow
Allies 	Black Arms
Enemies 	GUN
Shadow arrives inside the main GUN ship and is ordered by Black Doom to destroy the ship with the bomb. Shadow goes on to begin his mission. Meanwhile, Sonic and the others spot Shadow entering into the ship. Before they set off to chase him, Commander Tower orders them to battle some Black Arms invading the main ship and that his walkers will deal with Shadow.
Stage 	GUN Fleet Act 2
Mission 	Eliminate 50 Black Arms
Characters	Sonic, Tails, Knuckles, Amy, Cream, Big, Rouge, Vector, Espio, Charmy, Mighty, Julie-Su, Fang, Bean, Bark
Allies 	GUN
Enemies 	Black Arms
Shadow attacks a number of GUN walker mechs and then enters the inside the engines of the fleet and placed the bomb on them. As soon as he leaves, the bomb explodes, the engines are critically damaged, and the GUN ship begins lose altitude. Alerted over this, Commander Tower orders the heroes and his soldiers to escape from the fallen ship.
In the next scene, the heroes, inside an escape ship, watch as the GUN ship explodes. Commander Tower then informs the heroes that he and the President are safe and are heading into GUN Headquarters and orders them to head there too. Just then, Black Doom is talking from the speakers and warns the heroes that they may have stopped the bombs in Central City, but the GUN fleet is destroyed and that they have forgotten their last attack. Everyone is confused of what he's saying. The scene then switches to Eclipse who is ordered by Black Doom to activate the Eclipse Cannon. He presses the fire button and the Eclipse Cannon charges up, and fires down to earth. The massive beam destroys the White House and a massive explosion surrounds Central City, obliterating the buildings and bridges. After the explosion, Black Doom laughs maniacally as Central City is destroyed. The chapter ends.
== Chapter 8: Last Line of Defense ==
With GUN's fleet and Central City destroyed, the heroes and GUN must stop the Black Arms and Shadow from attacking GUN headquarters and protect the last Chaos Emerald and the citizens in the shelter.
The chapter begins with the news reporter reporting on television that Central City is destroyed by the Eclipse Cannon's laser beam which was the cause of the Black Arms. However, the citizens were evacuated by G.U.N. in events before the firing took place.
In the next scene, the heroes are inside the airship. They are distraught that Central City was destroyed and that the citizens have no place to live. Fang remarks that Central City deserved to be destroyed because it was a trash city and that the citizens can live in the dump. His comment sparks outrage from the others. Even Bean and Bark were also displeased with him. Cream insists that Fang apologize for what he said. He refuses, but when Rouge threatens to extend his jail time, he apologizes, albeit half-heartedly. Switching gears, the heroes discuss how the Black Arms got into the ARK and fired the Eclipse Cannon. Sonic assumes the Black Arms returned to Central City and destroyed the GUN fleet just to distract them from finding them. Tails brings up that last time, Dr. Eggman destroyed half of the moon with the Cannon with 6 Chaos Emeralds, and says the Black Arms used less than 6 Chaos Emeralds to destroy Central City. Knuckles then assumes they used 2 Emeralds to make this happen and questions why the Black Arms destroyed part of the world when they wanted it gone completely. Sonic replies that they must enjoy playing games with them. They receive a call from Commander Tower who tells them that they will enter inside GUN HQ very shortly.
In the next scene, the heroes, Team Hooligan, Commander Tower, and the President enter inside the room. The President asks Tower about the state of the citizens. He responds they have been safely evacuated into the shelter of the base. Just then, siren blares, and the GUN soldier appears to inform everyone that an approximate number of 1,000 Black Arms are intruding the Headquarters with Shadow joining with them. Outraged at the news, Commander Tower orders the soldier to send out the large army of soldiers and robots to fight against them and orders him to activate his battle mech Diablon. The soldier tells him that the machine is not yet ready, but the Commander orders him to do it anyways as they must take drastic measures to defeat the Black Arms once and for all. With that, the soldier carries on with the orders. Commander Tower then tells Sonic and the other heroes to help his men to eliminate the Black Arms as this is the last line of defense against the Black Arms. Sonic assures they will get rid of them no matter what. With the Commander begrudgingly wishing them luck, the heroes rush out of the room.
Adventure Field	GUN Headquarters
Mission 	Head to Underground Refuge
Characters 	Sonic, Tails, Knuckles, Amy, Cream, Big, Rouge, Vector, Espio, Charmy, Mighty, Julie-Su, Fang, Bean, Bark
Stage 	Underground Refuge Act 1
Mission 	Eliminate 70 Black Arms
Characters	Sonic, Tails, Knuckles, Amy, Cream, Big, Rouge, Vector, Espio, Charmy, Mighty, Julie-Su, Fang, Bean, Bark
Allies 	GUN
Enemies 	Black Arms
Somewhere else in GUN's fortress, Shadow is ordered by Black Doom that the last Chaos Emerald is located far ahead and then find and destroy the shelter where all of the humans are inside. Shadow obeys and declares to put the final nail into humanity's coffin.
Stage 	Underground Refuge Act 2
Mission 	Find the Chaos Emerald
Character	Shadow
Allies 	Black Arms
Enemies 	GUN
Shadow finds the Chaos Emerald inside a large room. Before he could exit the room, he is confronted by Commander Tower, who is controlling Diablon. Satisfied of meeting Shadow for the first time in 50 years, Commander Tower declares to put an end to him once and for all. Having no idea who he is, Shadow prepares to battle Diablon.
Boss 	Diablon
Mission 	Defeat Diablon
Character	Shadow
Meanwhile, Sonic and the others are continuing eliminating the rest of the Black Arms. They receive a call from Commander Towers who tells them that Shadow has stolen the Chaos Emerald and is heading to the shelter to kill the citizens. Sonic volunteers to find Shadow to protect the citizens, which shocks everyone, even Fang and Commander Tower. He explains to them that he has fought Shadow before and will do it again. Despite having their doubts, the others (except for Fang) all wish Sonic luck in stopping Shadow while Sonic wishes them well in eliminating the rest of the Black Arms. So Sonic races off to find Shadow.
Stage 	Underground Refuge Act 3
Mission 	Confront Shadow
Character	Sonic
Allies 	GUN
Enemies 	Black Arms
Sonic finds Shadow inside a large room where the shelter is located. Sonic asks him why is he siding with the Black Arms. Shadow refuses to explain and tells him to get out of his way. Sonic refuses, and while showing some reluctance, he states that he has no choice but to fight him. The two hedgehogs engage in battle, trading a few hits. After that, they knock each other out. Just then, Shadow begins to feel confused and wonders what is happening to him. Doom's Eye notices this and orders Shadow to destroy Sonic. To make sure he obeys, he controls Shadow's mind as the eye glows. Sonic notices this and realizes that Shadow is brainwashed by Doom's Eye. Now all that Sonic has to do is to not only save the citizens, but also save Shadow.
Boss 	Shadow & Doom's Eye
Mission 	Defeat Shadow & Doom's Eye
Character	Sonic
Sonic manages to defeat Shadow and Doom's Eye. Shadow wakes up and wonders what happened to him. Sonic explains that he was brainwashed by Black Doom, and that everything is okay. All of a sudden, a laser beam fires at Shadow, knocking him unconscious. It turns out that it was Commander Tower who is controlling a now regenerated Diablon. Sonic tells him off for attacking Shadow, but Commander Tower says that Shadow is a danger and must be put out. Despite Sonic explaining to him that Black Doom brainwashed him, Commander Towers ignores him and sets off to finish off Shadow. Then Sonic steps up and hits Diablon before it could charge up another laser blast. This infuriates Commander Tower who declares Sonic an enemy to G.U.N. and threatens to kill him. Now Sonic must defeat Diablon.
Boss 	Diablon
Mission 	Defeat Diablon
Character	Sonic
Sonic permanently destroys Diablon. Commander Towers begins to curse at the hedgehog. Sonic retorts and says that he's through working for him and decides to help Shadow up. The chapter ends with Sonic carrying Shadow out of the large room.
==Chapter 9: Aboard the ARK==
After successfully eliminating the huge army of Black Arms, the heroes head to the ARK to stop another another army while also helping Shadow regain his memories.
The chapter begins with all of the Black Arms successfully eliminated by the heroes, but the soldiers are injured and all of the robots were destroyed. Tails and the others are exhausted after eliminating the Black Arms. Tails goes on to check on Sonic to see if he's okay, and not very long, Sonic responds and explains that everything is okay with Shadow and will explain as soon as he meets up with them. Tails says they are heading to rest somewhere in a room. Sonic responds that he will come to meet them there along with Shadow. Shadow asks Sonic why is he helping him despite his recent actions. Sonic replies he is a hero and he once saved the world. Shadow is confused, but Sonic assures that he'll soon remember later. The scene ends as the two go on to find the others.
Adventure Field	GUN Headquarters
Mission 	Find the medical facility
Characters 	Sonic
Sonic and Shadow arrive to the emergency room to meet with the others who are resting from the battle against the Black Arms. The others are happy to see Shadow back to normal. Sonic explains to everyone that Shadow was under Black Doom's mind controlling powers via his third eye, making everyone relieved. Cream then brings up Shadow's memory loss, Shadow responds that his images of the past begin to display his mind. Sonic states that as soon as everyone is finished resting, they must resume to fight off the Black Arms, but they must leave the GUN Fortress because he had to defending Shadow from Commander Tower's battle mech which angered him. Tails states that there's isn't much to worry about since all of the GUN soldiers are injured and the robots are destroyed. Some of the heroes stress that due to the Black Arms destroying Central City and decimated G.U.N.'s army, they are winning the war, but Sonic assures everyone that the battle isn't over and they all have a chance in winning as long as they don't give up and stay united. This lift up everyone's spirits with the exception of Fang who decides to leave the room. Bean and Bark object to this, but Fang would have none of it and the trio leave. Amy wonders where are the Black Arms located. Tails responds that they are located at the ARK since they fired the Eclipse Cannon earlier. He suggests that everyone must head to his workshop at the Mystic Ruins, for he has created a spaceship to take them up to the ARK. Sonic states they'll find his memories just as they will eliminate the Black Arms. Shadow, holding a Chaos Emerald he stole from the vault, uses Chaos Control to teleport everyone from GUN HQ to the Mystic Ruins.
Adventure Field	Mystic Ruins
Mission 	Go to Tails' Workshop
Characters 	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Vector, Espio, Charmy, Mighty, Julie-Su
The heroes arrive at Tails' workshop. Tails enters inside while the others wait. In just seconds, they are amazed to see that his Tornado bioplane was connected to a spaceship. Everyone gets inside, and with Tails piloting the Tornado, the spaceship launches.
Meanwhile at GUN HQ, Commander Tower is recovering from the battle against Sonic. He is seething with fury over Sonic "betraying" GUN by protecting Shadow, and blames him for the Black Arms' destroying their reinforcements. The President, while not understanding why Sonic would defend Shadow, argues that he may have his reasons. Commander Tower isn't convinced and decides to go and use a spaceship to fly up to space to confront the heroes and also send an emergency fleet from a faraway G.U.N. base. The President tries to convince him that he should focus on the Black Arms since they are the main threat, but Commander says he doesn't care. With the president looking on skeptically, Commander Tower exits the room. He enters the room where the spaceship is inside. The scene ends with Commander Tower vehemently declaring to eliminate the heroes and the Black Arms.
In the next scene, the heroes inside the spaceship are approaching the ARK. The others, particularly, Sonic, Amy and Rouge talk to the others about their visit to the ARK and the events that happened. Shadow, who is looking at the ARK through a window, hears the others talk about the memories in the ARK and images begin to display in his mind - the memories with Maria, Maria's death, and his sacrifice to save the world. The others begin to wonder what is wrong with Shadow, and he explains about the flashbacks in the ARK. Sonic assures him that they will find his memories. Tails use his Emerald radar from the Tornado to locate the Chaos Emeralds inside the ARK. He soon finds out there is no signal of the Emeralds. Rouge assumes the Black Arms may have taken them to another location. Tails looks on ahead of the ARK where an army of Black Arms are attempting to shoot the ship down. Sonic says they would have to worry about the Chaos Emeralds later and they must eliminate the Black Arms in order to enter inside the ARK. Tails pilots the spaceship to somewhere safe so that the heroes begin to fight off the aliens.
Stage 	Space Gadget Act 2
Mission 	Eliminate 50 Black Arms
Character	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Vector, Espio, Charmy, Mighty, Julie-Su
Enemies 	Black Arms, GUN
After successfully eliminating the Black Arms (and also evading from GUN's robots), the heroes safely enter inside the ARK. They got out of the shuttle and Tails assumes that there are more Black Arms inside. Then Vector remembers about his detective case and tells the others that he, Espio, and Charmy must stay in the ARK to recover the lost files. Sonic comes with the idea to have him and Shadow come along to help Shadow regain his memories as well as eliminate the Black Arms along the way; Amy and Rouge also volunteer to come with them too. Shadow accepts this offer. This leaves Tails, Knuckles, Cream, Big, Mighty, and Julie-Su to deal with the Black Arms at another other location. With the two groups wishing each other luck, they begin their separate missions.
Adventure Field	Space Colony ARK
Mission 	Enter inside the engine room
Characters 	Tails, Knuckles, Cream, Big, Mighty, Julie-Su
Stage 	Space Gadget Act 3
Mission 	Eliminate 60 Black Arms
Character	Tails, Knuckles, Cream, Big, Julie-Su, Mighty
Enemies 	Black Arms, GUN
Adventure Field	Space Colony ARK
Mission 	Enter the computer room
Characters 	Sonic, Shadow, Amy, Rouge, Vector, Espio, Charmy
Sonic, Shadow, Amy, Rouge, Vector, Espio, and Charmy find a computer which was shutdown for 50 years. Vector turns on the machine to activate the computer monitor. As the screen appears, he slides in the disk that he found back at Prison Island's database and activates the computer screen with the lost files. Espio, reluctantly, tries to use his computer skills to activate a warphole so that they all can get inside, but the process is taking too long. Shadow steps in and hits the monitor with his hand. In an instant, the warphole created. They all enter inside to find out information of Shadow's past, but first, they must extract the four terminals.
Stage 	ARK Complex
Mission 	Activate 4 Terminals
Character	Sonic, Shadow, Amy, Rouge, Vector, Espio, Charmy
Enemies 	GUN
Sonic, Shadow, Amy, Rouge, Vector, Espio, Charmy have already extracted the files for the disk. Then they see a warphole and Shadow suggests that they go inside as it could lead to the past. Unsure, Sonic agrees. With Vector, Espio, and Charmy plan on returning back to the computer room and make sure they return back to safety.
Sonic, Shadow, Amy, and Rouge appear in the ARK 50 years in the past. They are greeted by Maria, much to the delight of Shadow. He explains to her about losing his memory and needs to know who he is. Maria agrees to help him and asks the others to follow him to Prof. Gerald's lab.
Stage 	Lost Impact Act 2
Mission 	Find the professor's laboratory
Character	Sonic, Shadow, Amy, Rouge
Enemies 	N/A
Sonic, Shadow, Amy, Rouge, and Maria enter in Prof. Gerald's laboratory where he is researching. He greets them all and Shadow asks about his history. Prof. Gerald tells him that his body was to the source for a cure; he says Maria had developed a disease known as Neuro-Immuno-Deficiency-Syndrome, and because there was no cure available, he hoped to make one in Shadow. But he had problems developing a cure, and created the Biolizard, the prototype of the Ultimate Life Form could not break in his research. Because of the Biolizard's failure, Prof. Gerald sought the aid of Black Doom. He used his blood to create Shadow and gave him skills in Chaos Control, but Black Doom didn't realize that Prof. Gerald would later make him into a defender of earth against the Black Arms in the next 50 years.
Prof. Gerald then informs Shadow that he was created to be the hero of earth and protect others from many threats that can harm it. He apologizes to Shadow for putting too much responsibility on his shoulders, but he is well prepared he was created with Maria’s love for the people of Mobius and his hope for the future in mind so that he may protect them. Shadow completely understands this and says that he wants to stay with Maria, but Maria says he must stay to protect Mobius, and assures him that he'll always have her and Prof. Gerald. Shadow nods his head and says goodbye to the both of them. He, Sonic, Amy, and Rouge exit the room.
Sonic, Shadow, Amy, and Rouge return from the warphole where Vector, Espio, and Charmy welcome them back to the computer room. Shadow informs the Chaotix that he knows the truth to his past. Vector tells the others that they must stay behind the room to gather data which will take a very long time, much to Espio's chagrin. Sonic and the others go on to tell the others about Shadow finding his memory as the Chaotix go and find the capsule room.
Adventure Field	Space Colony ARK
Mission 	Leave the computer room
Characters 	Sonic, Shadow, Amy, Rouge, Vector, Espio, Charmy
Sonic and the others talk about meeting Maria and Professor Gerald and understood how they mean a lot to Shadow. Rouge brings up to Shadow about Prof. Gerald going insane in using the ARK to destroy the world to avenge Maria's death at the hands of GUN. Shadow begins to understand his descent to insanity, but has to accept facts; nonetheless, he is dedicated to live the professor's vision for Mobius. Then he brings up remembering Sonic, Amy, and Rouge. For Sonic, he remembers their battles and both of them teaming up to stop the ARK from crashing earth. He then tells Sonic that he's anticipating a rematch, which Sonic accepts. For Amy, Shadow remembers her pleading him to help stop the ARK as well as reminding him Maria's true wish. For Rouge, he remembers their partnership and that Rouge was a spy for GUN to stop Eggman's plans, but Rouge explains it was business and reminds him that he kept his inhibitor rings to remember him, which Shadow smiles with approval.
After the conversation, Sonic receives a call from Tails who informs him that the Black Arms have been eliminated successfully and is waiting for them to arrive so they can depart from the ARK. Sonic responds that they'll be there, and tells him that Vector, Espio, and Charmy have to stay behind to continue their mission.
Adventure Field	Space Colony ARK
Mission 	Meet with the others
Characters 	Sonic, Shadow, Amy, Rouge
Sonic and his group arrive to meet Tails and the others. Sonic tells them of Shadow regaining his memories and they are impressed. The group then talk what must they do next now they have taken out the Black Arms in the ARK. Then Sonic shows the others the Black Comet far away from them. Knuckles assumes that the comet is where the Black Arms are coming from. Also knowing that 6 of the Chaos Emeralds are inside there, the heroes set to leave the ARK. However, they are surrounded by G.U.N. mechs and Com. Tower who is leading them. He tells them all they're in trouble for defending Shadow and that he is planning to exterminate them. Shadow then asks Com. Towers why is he antagonizing him. Com. Towers explains that he once lived in the ARK 50 years ago during the time Shadow was created and that he had a close relationship with Maria. He then goes on to blame Shadow for his death.
With a flashback playing, Com. Tower tells the heroes the story of how he and Maria were close, and everything was peaceful until G.U.N. invaded the ARK and sought to kill everyone in it. The residents of the ARK sought to escape, and during this, Com. Towers saw Shadow and Maria running down the hallway. He wanted to follow the both of them to safety, but they didn't notice and he took Maria in a room, in which she met her fate at the hands of a G.U.N. soldier. To make matters worse, his family was killed by other soldiers, too. Tower, along with other surviving members of the raid, managed to escape to safety, and eventually, he was taken under the wing of a previous G.U.N. Commander who told me that Shadow was a danger to the world and that Prof. Gerald deserved to be executed for ignoring the government's warnings. He comes to the conclusion that had Shadow never been created, Maria would've never died.
After hearing his story, Sonic and the others call Com. Tower's justification as ridiculous with him blaming Shadow for the deaths of those in the ARK; Sonic even asks why would Tower join G.U.N. despite them killing his loved ones. Tower justifies that the Commander had his reasons and while he didn't agree with it, he had to accept facts. Shadow calls out Com. Tower for this reason and that he had no reason to hate him for something he had no control over and that he was created to protect Mobius. Com. Tower ignores him and decides to eliminate not only Shadow, but also Sonic and the rest of the Mobians he despises. Knowing that Com. Tower cannot be reasoned with at all, the heroes prepare to battle him and the G.U.N. mechs. Before this, a giant Black Arms creature known as the Black Dragonfly destroys the mechs and traps Com. Tower with his slime. Sonic and the others were doubtful of having to save him, but Shadow insists that they must as he wants to prove he's not a danger as he thinks he is.
Boss 	Black Dragonfly
Mission 	Defeat Black Dragonfly
Character	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Mighty, Julie-Su
The heroes free Commander Tower from the Black Dragonfly's slime. Commander Tower is amazed by the heroes saving him despite his treatment of them. Shadow then explains that he was created to save the world and showed sympathy for the loss of his family. After that, the heroes set off to fly up to the Black Comet, with the Commander looking on.
Inside the Black Comet, Black Doom and Eclipse are looking at the computer monitor where he watches the space shuttle arriving to the comet at a very far distance. Black Doom comments that they have a death wish and they won't survive the Black Comet once they approach it, and even if they do survive, the Black Arms will win the war. The screen fades to black and the chapter ends.
== Chapter 10: Comet Invasion ==
The heroes head to the Black Comet to retrieve the stolen Chaos Emeralds and defeat the Black Arms once and for all, but not without the help of Dr. Eggman, Metal Sonic, and Team Hooligan.
The chapter begins with a scene taking place at earth. Dr. Eggman, Orbot, Cubot, and Metal Sonic are at an unknown forest and have just finished constructing a spaceship. Eggman created it to enter the Black Comet and take the Chaos Emeralds. They see an airship crashing from a distance, and learn that it was Team Hooligan who crashed into the ship. Fang was surprised to see Eggman at the forest. Eggman offers Team Hooligan to join them in their quest at space to get the Chaos Emeralds from the Black Comet. Fang refuses, knowing that he didn't promise to pay him the last time they were working for him. Eggman stating that the Black Arms will destroy the world and that Team Hooligan won't enjoy any of the riches once they destroy it. This convinced Fang to come with him, and soon the villainous group enter inside the ship.
Back at space, the heroes are inside the Tornado Space Shuttle to find the Black Comet. Inside the comet, Black Doom and Eclipse are watching them on the monitor inside the lair. He sends an army of ships and Black Hawks to take down the shuttle.
Stage 	Cosmic Intrusion
Mission 	Infiltrate the Black Comet
Character	N/A
Enemies 	Black Arms
The heroes arrive to the Black Comet. Tails safely lands the shuttle on the ground. They exit and examine the area, looking for an entrance inside the comet. Shadow informs the group that he senses an alien presence far ahead, assuming they could lead them inside. So the heroes go on to find a way inside the comet.
Stage 	Toxic Oasis Act 1
Mission 	Find a way inside the Black Comet
Character	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Mighty, Julie-Su
Enemies 	Black Arms
The heroes arrive inside the Black Comet. Where it's all red, purple, and gray colored around. After briefly examining the area, they set off to find Black Doom.
Adventure Field	Black Comet
Mission 	Enter inside a room
Character 	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Mighty, Julie-Su
Meanwhile, Dr. Eggman, Metal Sonic, Orbot, Cubot, and Team Hooligan arrive inside the comet as well. Preparing to take the Chaos Emeralds from Black Doom, the villains set off.
Stage 	Toxic Oasis Act 2
Mission 	Find the center of the comet
Character	Metal Sonic, Fang, Bean, Bark
Enemies 	Black Arms
We now return to the heroes who are still in search of Black Doom, and in no time at all, they managed to find him. Before they could confront him, they realize that it was a hologram that Black Doom had set to trick the heroes. Suddenly, the ground begins to shake and large tentacles rise from the group, binding the heroes who are having difficulty in escaping. Black Doom, from the speakers across the room, taunts the heroes for falling for his trap and informs them that they will be executed at the hands of an army of Black Oaks momentarily.
Meanwhile, Dr. Eggman and the other villains are still in pursuit of Black Doom when they begin to notice Sonic and the others held in the clutches of the tentacles and an army of Black Arms are ready to attack them. Despite Fang wanting to leave the heroes to meet their fates, Eggman, of all people, decides to rescue them. With no time at all, the villains destroy the army of Black Arms and break the tentacles trapping the heroes, freeing them in the process.
Sonic and the others are surprised Dr. Eggman and his crew would save them. Eggman states that he wouldn't let his enemies die at the hands of the Black Arms. He then turns to Shadow, who not only tells him of regaining his memories, but also explains that he didn't intend on destroying his base earlier because he was being mind-controlled by Black Doom. While grudging, Eggman gives him the benefit of the doubt. Sonic then questions Eggman if he's going betraying the heroes like he did last time. Eggman says he isn't going to turn on them this time. While doubtful, Sonic accepts the help of Eggman's crew. Soon, the heroes and villains go on to find Black Doom.
Adventure Field	Black Comet
Mission 	Enter Final Haunt
Characters 	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Mighty, Julie-Su, Metal Sonic, Fang, Bean, Bark
Before you can begin the stage, the heroes are running to a pathway, but it turns out that they are obstructed by a blue barrier. Black Doom informs the group that he has enabled hidden security systems to obstruct them from finding him and will send his army to destroy them and take the last Chaos Emerald. Dr. Eggman tells the others that his scanner will help them to locate and disable the security systems in order to proceed.
Stage 	Final Haunt Act 1
Mission 	Deactivate 4 security systems
Character	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Mighty, Julie-Su, Metal Sonic, Fang, Bean, Bark
Enemies 	Black Arms
The group are at a pathway continuing to find Black Doom, but along the way, they are confronted by Eclipse and a group of Black Arms. Now the heroes and villains engage in battle.
Boss 	Eclipse the Darkling
Mission 	Defeat Eclipse
Characters	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Mighty, Julie-Su, Metal Sonic, Fang, Bean, Bark
As Eclipse drowns in the black slime, the heroes proceed to confront Black Doom.
Stage 	Final Haunt Act 2
Mission 	Find and confront Black Doom
Character	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Mighty, Julie-Su, Metal Sonic, Fang, Bean, Bark
Enemies 	Black Arms
The gang finally confront Black Doom (no hologram this time). Black Doom tells them he's impressed they made it this far after all of the traps he pulled on him. Sonic and Shadow rebuff his flattery and tell him the Black Arms will face their end. Black Doom laughs and boasts that the Black Arms are the perfect species and that humans and mobians are no match for them. Shadow tells Black Doom he made a promise to Maria to save the planet, but Black Doom responds that Shadow has been deceived by Sonic and his friends to go against him and the Black Arms, but nonetheless, he plans on destroying them. Now the battle is engaged.
Boss 	Black Doom
Mission 	Defeat Black Doom
Characters	Sonic, Tails, Knuckles, Amy, Cream, Big, Shadow, Rouge, Mighty, Julie-Su, Metal Sonic, Fang, Bean, Bark
The heroes and villains have defeated Black Doom as well as the army of Black Arms. They have acquired all 7 Chaos Emeralds. Black Doom, on the ground, curses the heroes and declares that the Black Arms will return. Satisfied of his defeat, the group decide to return home as their battle against the Black Arms is over. Or is it?
THE END...?
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