The Circle Of Time

The Circle Of Time is a Halloween special which was aired on 31st October 2014.
== Plot ==
On the night before Halloween, Steam Engine and the Great Witch Engine are planning an attack on the world but then Steam Engine was contacted by voice saying about the circle of time as he rides through the castle to follow the voice and then ends up in the underworld. Thinking that he’s been tricked by the voice, Steam Engine demands to know what’s going on, the voice tells him that he’s just an illusion and tells Steam Engine that the circle of time is going to begin on Halloween night and that he has unawakened powers and is not like any other ghost. The voice told him that he had to absorb souls of spirits, engines, humans and animals in order to gain power. Steam Engine was delighted and returns to the castle. Meanwhile Proteus, Al Mighty Witch Engine and Wifo arrive in the haunted forest at the Great Witch Engine’ castle where the Flying Dutchman (giant hand) grabs her and attempts to kill her but Steam Engine appears and possess the Flying Dutchman and makes him put the Great Witch Engine down and grab Al Mighty Witch Engine and kill her. He then knocks out Proteus and absorbs Wifo, then Steam Engine and the Great Witch Engine take an unconscious Proteus to their castle and locked him up. 
On Halloween night Steam Engine travels to Earth with the Great Witch Engine were he kills Thomas and then Duck arrives and was distraught to see him return as a ghost and that how ashamed she is to have such an evil, sick and twisted brother so Steam Engine goes to absorb her just as Noob arrives as ghost to safe him and transports him to the Railway of the dead but Steam Engine doesn’t care and has more important things to worry about so they poison the world with radiation. as everyone in the world slowly dies, Noob and Duck arrive to Proteus’s layer where they saw the Flying Dutchman. They told him about Steam Engine how he tortured them when he was alive is now trying to doing again while he's ghost. the Flying Dutchman told them that him and the army were going to the castle to stop them but failed due to Steam Engine being so powerful and tells him that Proteus is locked in the Great Witch Engine’ castle so Noob goes to castle to free him. Meanwhile on Sodor, everyone is wondering why the sky has gone purple & whats causing the bad smell when Steam Engine appears to them much to their horror & tells them that this is a killing disease and everyone will be dead in a few hours. Steam Engine then tells them that the circle of time is will begin tonight and told them that he killed Thomas, much to their disgust, and says they'll die as well, after saying all that, Steam Engine leaves. Meanwhile Noob arrives at the castle & manages to get inside. He finds Proteus tells him that he needs the magic orb (which he had since he banished Quan Kaah to the underworld and was what was left of Quan Kaah when he was banished) in order to escape the castle. Meanwhile Steam Engines's appearance starts to change as he continues to absorb more souls. He later gains a demon like form with horns & a black cape. 
Steam Engine and the Great Witch Engine travel to the railway of the dead were Steam Engine tells Duck that narrow gauge engines are dead, much to his horror and that he also visited National Railway Museum & says the Flying Scottsman, Mallard, Duchess of Hamilton and everyone else are dead. He then attacks Duck and says it's his turn to die, then just as the Flying Dutchman (in his hand shaped form) goes to protect him, Steam Engine possess him again, knocking him unconscious. Then Noob goes to trap him just as the Great Witch Engine is about to attack an unconscious Flying Dutchman, Steam Engine tells her to get Noob off him but she refuses causing him to attack & injure her in a fit of rage. While they argue, Sir Handel comes back with Proteus's orb and Noob sneaks it off to the Great Witch Engine's castle. The Great Witch Engine and Steam Engine both notice and Steam Engine says that she was just one of his pawns and is about to absorb her when, the Flying Dutchman tells Steam Engine what the crystals for leading Steam Engine to follow Noob to the castle to stop Proteus from being freed. Noob arrives at the castle with the orb much to Proteus's delight and both teleport back to the haunted mountains just as Steam Engine arrives but was too late but he doesn’t care & goes to Sodor to tell the engines that he will now kill them. the Flying Dutchman pleads Proteus not to kill the Great Witch Engine since she knows where his sister is. Proteus demands to know what she & Steam Engine were planning. She tells him about everyone's dying and Steam Engine is going a absorb everything, leading Proteus & his army to find him immediately. 
Steam Engine then travels to the moon to absorb the entire population of earth. Proteus, Duck, Noob and Flying Dutchman arrive & were shocked to see him transform into Quan Kaah! Proteus was shocked to see him and doesn’t understand why he’s here. Steam Engine/Quan Kaah takes his new name. As Proteus asks why he’s here, Quan Kaah now understands what the circle of time actually meant and realized that Steam Engine is Quan Kaah and that he must go back in time to cast a spell to change the railway afterlife into darkness and create the Great Witch Engine (who is the Flying Dutchman’s sister Amazon). Many years in the past Proteus fought Quan Kaah and then trapped him in the underworld and how he got the magic orb. It was revealed that Quan Kaah was born in 2014 & that he traveled back in time to 1904 where he created the railway of the dead & was killed in 2013. Proteus uses the magic orb to bring back the souls of ghosts, engines, humans & animals who were absorbed by Steam Engine expect Al Mighty Witch Engine because she was killed by the Flying Dutchman (giant hand form) when Steam Engine possessed him and the world was back to normal. 
Suddenly the railway of the dead collapses by Quan Kaah, which causes Proteus to be trapped in the Underworld with the Great Witch Engine for a year & all the spirits where sent to Earth where they couldn't be seen or heard. In the Underworld, Proteus hears a voice & asks the voice to show its self and reveals a great western engine named Iron Duke who told Proteus that he was responsible for the circle of time and said that the circle of time had to happen because in an alternate timeline, the RMS Titanic would destroy the world and Proteus wouldn’t be able to stop her. But because the alternate timeline no longer existed, Quan Kaah was created and the Titanic is now imprisoned in the underworld.