Weapons of Past Destruction ( comic story ) Summary . Leaving World War II behind , the Ninth Doctor , Rose and Captain Jack discover that Time Lord technology , lost in the wake of the Time War , is being sold on the intergalactic black market ! Now the threat of a NEW temporal war brews on the horizon . Can the Doctor stop history repeating itself ? Plot . Part one . Having just saved Blitz - stricken London from the threat of a damaged Chula warship and its runaway nanogene s , and with Jack having revealed his inner heroism by nearly blowing himself up while towing a German bomb into space , the Doctor , Rose and Jack are taking a tour of the universe , hoping for more sightseeing opportunities and fewer occasions of near - certain death . However , the three arrive at Excroth to find the planet destroyed , despite the fact that they should have arrived " slap bang in the middle of the Second Excrothian Tetrarchy , a period of unparalleled scientific enlightenment " . Almost immediately , a massive ship decloaks and captures the TARDIS with a tractor beam ; the Doctor storms out of his timeship to confront a platoon of massive robotic Lect , which confine the Doctor , Rose , and Jack inside a localised force field and demand to know why the travellers have come to the Excroth system . The Doctor , however , uses his sonic screwdriver to activate Jack ' s vortex manipulator and teleport the three to the safety of a storage bay . There , Rose finds a tachyon inhibitor , which , the Doctor explains , protects " its wearer from cause and effect " , and the Doctor explains that " the whole system is buzzing with chronon particles " . Moments later , the storage bay ' s artificial gravity fails as a squadron of armoured centaur - like Unon attack the ship . The Doctor attempts to lead Rose and Jack back to the TARDIS , but the three are intercepted by a group of Lect , who order the Doctor and his companions to leave the ship . Another moment later , one of the Lect is destroyed by an Unon fighter , who blasts a hole in the ship , creating a decompression leak that nearly drags Jack and Rose out into space . Rose begins to glow when the tachyon inhibitor on her wrist activates , and one of the Lect reactivates the ship ' s external shield , saving the two humans . The Doctor offers to help the Lect escape their damaged ship even as another of the robots is destroyed by an Unon fighter , but the Lect insist that his kind " never run from battle " before attempting to terminate the Doctor . Jack knocks the Doctor out of the way , blasting off the Lect ' s arm with his sidearm before the three escape and head for the TARDIS while Rose demands to know why she started glowing when the tachyon inhibitor activated . When they are intercepted by another Lect , Jack blasts it with his sidearm before the Doctor uses his sonic screwdriver to destroy Jack ' s weapon , and the three of them finally make their way back to the TARDIS . The Doctor and Jack rush into the timeship , but Rose ' s jacket becomes snagged on the severed arm of the destroyed Lect as the police box door slams shut . The TARDIS dematerialises just as the Lect ship is destroyed , causing Rose and the Lect to be thrown directly into the Time Vortex , where the tachyon inhibitor on Rose ' s wrist activates . Part two . As Rose falls through the Vortex , the Doctor tries to materialise the TARDIS around her , but only her jacket appears within . Meanwhile , Rose wakes up next to a squid - like alien . The Doctor refuses to believe she is dead , and uses the TARDIS to track the DNA from her jacket . However , the coordinates it finds would place her in the blast radius of a nascent supernova Beart - 54 in the Beart system . Jack materialises the TARDIS on a nearby planetoid , Fluren ' s World . They find the sun ' s nova is being held back by a time bubble , technology that hasn ' t existed since the Time War . Jack takes the Doctor to the Fluren Temporal Bazaar , a black market for time weapons . There , they find Rose , who has been stuck there for four days . She fell through the Vortex , and the tachyon inhibitor protected her from the time wind s . Glom , the squid alien , picked her up with his ship ' s time scoops . The Doctor recognises one of Glom ' s weapons , and realises they ' re all from Gallifrey . He flips Glom ' s table in anger , and steps up to make an announcement . He ' s offering his Time Lord mind for sale , in an attempt to attract the Unon . Instead , the Lect appear . Part three . The Doctor tries to open the Lect robotic armour with his screwdriver to see who he is dealing with , but he is not quick enough . While Jack and the Doctor wrestle with the Lect , the Unon arrive and engage the Lect in a fight without so much as a warning . The ensuing chaotic battle between the Lect , the Unon and the security guards of the Fluren Temporal Bazaar triggers the emergency protocol . The time bubble that have been keeping the supernova in check will disperse in ten minutes . All the traders , including Glom , hurry to leave Fluren ' s World . The Doctor seems to pay little heed to this development . He is busy trying to get the attention of the Unon . At the same time , Jack notices that the Lect are loading the TARDIS into their ship . An Unon directs a blast of energy at the Doctor that completely dissolves him , leaving no trace of the Time Lord . Rose , horrified , cries : " You killed him ! " , while Jack drags her away from the commotion in a last minute attempt to save at least the TARDIS . But , unbeknownst to both Rose and Jack , the Doctor was not vaporised . Instead , he was dumped into a sub - dimensional void . He can tell that he is being watched by someone unseen . This observer is Arnora , the mother superior of the Unon . She knows a lot about the Time Lord s , Time War and the Doctor himself . As if that knowledge is not enough , she tries to get into his head , causing some memories to resurface that are best left forgotten . She wants to learn how the Doctor has survived the Time War . Back on the Fluren ' s World , the Lect demand that Rose and Jack open the TARDIS . Just as Rose begins protesting , the door of the TARDIS opens . But it is not the Doctor inside . It is Jack . While the Lect and Rose are baffled by the second Jack and with only ten seconds before the collapse of the time bubble , the Jack on the ground understands the hint of the Jack from the TARDIS and operates his vortex manipulator . He manages to circumvent the TARDIS defences and transport himself into the TARDIS and a couple of seconds into the past . Ignoring the ill effects of his little trick , he runs to the TARDIS door and opens it from the inside . Now he is the Jack in the TARDIS . Rose makes a run for the TARDIS but cannot reach it in time before the time bubble deactivates . Arnora demonstrates to the Doctor what happened , accusing him that once again he left his friends to burn . Part four . Jack is distressed that Rose was left behind but happy that the TARDIS survived the supernova blast . As he tries to operate the controls , however , he realises that the TARDIS is being towed through the Vortex by the Unon . Meanwhile Rose is being woken by the Lect and finds herself their prisoner . Her threats to them that the Doctor will sort them out die out as the Lect remind her that he was killed by the Unon . They order her to serve the Lect now , causing a furious reaction . Rose challenges them to torture her . In the face of her defiance , a Lect opens up his armoured suit to reveal a figure inside , wired to the suit and resembling an Excrothian . In the Vortex , desperate Jack is trying to half threaten half reason with the TARDIS . Suddenly , the Doctor ' s face appears on one of the screens . The Doctor explains that the Unon are bringing the TARDIS to him . The TARDIS materialises in the Perpetual City , which is anchored within the Vortex itself . Jack warily steps out , gun in his hand , and receives another reprimand from the Doctor , until the latter realises that Rose is not with Jack . Arnora is pessimistic about Rose ' s fate , Jack tries to stay optimistic while simultaneously flirting with the mother superior , and the Doctor heads for the TARDIS to save Rose no matter what , when Evja , the Grand High Seer of the Unon , who has no ordinary sight but can see through time and space , explains that Rose is not on Fluren ' s World any longer . She is in a forbidden sector of time . The Doctor is unimpressed but another Unon , Borga , blocks his way to the TARDIS . She insists that the Doctor must remain and do the will of the mother superior , accusing him of the atrocities of the Time War . The Doctor intends to have none of this . Only the intervention of Arnora prevents further escalation . She explains that before the Time War the Unon were explorers , scientists . The war destroyed their civilisation and nearly destroyed theme species itself . But it was the aftermath of the war that was more important . The demise of both Time Lords and Dalek s created a vacuum of power that many races wanted to fill , races like Cybermen and Sontaran s . The Unon seers saw what was coming , so the Unon decided to prevent further chaos . They collected the detritus left over from the Time War and turned it into tools for peace , including the Perpetual City they are in . The Unon have no ambition to control time , but they prevent others from doing so . The Doctor asks if the Lect are one of those trying to cease control and learns that Borga despises them . Arnora intercedes once again before the tempers could flare . She saw in his mind the sacrifice the Doctor made for the good of the universe . She knows he ' s a good man . She proposes an alliance . The Doctor , however , is determined to save Rose first . But Arnora shows him a planet , Traxis , a world with more than seven billion inhabitants . A fracture in time caused by the Time War resulted in the past , present and future coexisting and creating chaos . If left unchecked , this time fissure would spread to the whole sector with catastrophic consequences . She shows him a temporal stabiliser of Gallifreyan make that could stitch time back together . She thinks that the Doctor is best qualified to put it to the good use . As the Doctor reaches for the stabiliser , he , Jack and Borga are suddenly transported to Traxis . The Doctor is not amused but resigns to do the job first and make a row later . The place is a mess with dinosaurs , neanderthals and killer robots competing for the title of the deadliest menace . While Jack and Borga cover his back , the Doctor detects the fault line smack under a mammoth . Briefly regretting not having learned Mammoth and rescued by Borga from being trampled over , the Doctor activates the device . Just as the device does its magic , the Doctor , Jack and Borga find themselves back in the Perpetual City . Arnora shows them the peaceful Traxis . She explains that this was the last test to make sure of the Doctor ' s motives . Finally , a mutual understanding of the common goals starts to emerge between the Doctor and Arnora . At his moment , the vortex manipulator on Jack ' s wrist beeps and shows a hologram of Rose ' s head . She seems distressed and says that she has escaped from the Lect . She needs Jack ' s co - ordinates to use the Lect ' s time scoop . Arnora is not quick enough to stop Jack from sending the data . Immediately a flotilla of Lect ships materialises above them . Neither Jack nor the Doctor can believe that Rose would betray them like this when Rose appears in front of them , holding a huge Lect - made gun and flanked on both sides by two Lect towering over her . Part five . With the Unon protecting the Doctor and the Lect protecting their newly found ally , Rose shoots the Doctor , while asking herself if he would ever forgive her . She gives the signal to the Lect to transmat her and the Doctor away , leaving the flabbergasted Jack behind . Although he continues fighting the Lect alongside the Unon , Evja dissolves him with a blast of energy . The Doctor comes to on the Lect command ship , understandably mad at Rose . She explains that they needed to plant a tracker on him for the Lect transmat to work . She did not know this would knock him out . Using Lect equipment , they try to locate Jack but he cannot be found on the Perpetual City . A Lect approaches the Doctor to discuss tactics and opens up the armoured suit to reveal a creature inside , a creature the Doctor clearly recognises . Jack finds himself in the same void , where the Doctor first met Arnora . Evja and Borga appear and explain that Jack is kept as an insurance . Evja thinks that involving the Doctor and his people was a mistake . She saw Jack ' s future and it should not be allowed . The Doctor has figured out that the Lect are actually Excrothian s . But he does not understand how the peace - loving people he knew became tank - like warriors . The Lect uses a needle to establish a psychic bridge . His name is Marleth . He used to be the grand prelon . He shows the day the Unon came and demanded to stop experiments with time travel . The Unon foresaw Exrothians becoming the Lect and tried to avoid it . They threatened to destroy Excroth if research in time travel continued . And they kept their word . Although Excrothians managed to escape using the very time - travel experiments that led to the destruction of their planet , they suffered a horrible fate . Their bodies became mere wizened husks . They built the walking tanks for supporting them and started calling themselves the Lect , after their god of war and revenge . The Doctor recognises the weapon used by the Unon against Excroth . Jack manages to call Evja back to the void by crushing a banshee capsule in his back molar and , thereby , shattering all psionic bonds . He wants to talk to her . The Doctor explains that the horrible weapon is an entropy engine , a Dalek - made weapon from the Time War . It can age a whole planet or a solar system to dust within minutes . What ' s worse , the entropy engine is behind impenetrable flux shields . The Doctor realises that only one thing can get past them , his TARDIS . Having decided to help Marleth in destroying the entropy engine , the Doctor loses no time . He crashes the Lect command ship into the perpetual city to create a diversion , while instructing the Lect to leave the ship and transmat him , Rose and Marleth near the TARDIS . They manage to get past the Unon guards , run into the TARDIS and materialise within the entropy engine . Then the Doctor leaves the rest to Marleth , who is going to turn the entropy engine on itself . As Marleth begins priming the engine , they are surrounded by the Unon , who shoot Marleth . With Marleth down , the Doctor threatens to ignite the entropy engine himself if Arnora does not stand down . She does not believe he is capable . But he ' s already done it once . The Unon have become just like the Time Lords , paranoid , corrupt and tyrannical . In the void , Evja explains why she thinks the Doctor is dangerous . She sees destruction following him wherever he goes . Jack asks Evja to look now at the future without the Doctor , with only the Unon in charge . As an Unon sneaks behind the Doctor to deal a fatal blow , he is preempted by Evja , who is carrying Jack on her back . She implores Arnora to listen to the Doctor because she saw their own future . Arnora disagrees . But Marleth , in a last effort before his death , manages to kill Arnora and is immediately killed by the Unon . The Doctor says that it is already too late and there is no way to disperse the energy in time . Evja is ready to accept her fate and resigns to disappear along with the Perpetual City . Fortunately , the Doctor manages to save her and some of the Unon by escaping in the TARDIS . He brings them to a planet off the beaten track , with no technology and makes Evja promise to leave the universe to look after itself . Notes . Original print details . 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