Piotr Rasputin and Meggan enjoy the sights of Paris: the Eiffel Tower and its surrounding skyline, a bistro, the Musee d'Orsay, and finally, the amusement park, Dudleyworld. Unfortunately, they find the park is closed for renovations.
As Meggan sulks at a cafe, the pair are approached by Elizabeth, a flight attendant Piotr once dated. However, he and Meggan are drugged by "Elizabeth's" touch, and their unconscious bodies loaded aboard a phony ambulance, as "Elizabeth" reveals herself to be Miss Locke, Arcade's assistant.
Waking up in a new Murderworld hidden beneath Dudleyworld, Colossus fights faux versions of the Acolytes, then relives the deaths of his parents. He and Meggan next face a replica of the Proletarian, Piotr's one-time alter ego.
Colossus breaks free from the virtual reality device in which Arcade bound him, and he menaces Arcade, but is held at bay when Locke aims her weapon at Meggan. Then Arcade makes a proposal: he'll tell Colossus who hired him if Colossus agrees to "kill" Arcade.
Soon, Colossus and Meggan are on a Murderworld roller coaster facing death traps which they evade. Next, they face Arcade himself, piloting a giant robot and a vicious version of the cartoon dragon Dudley. Meggan transforms the asphalt on which they stand to quicksand, and the battle ends when all the combatants sink.
Later, they leave the park in the ambulance and, now that Arcade's employers have video evidence they are all dead, he reveals to Piotr that he was hired by Black Air.
Later still, Piotr and Meggan board the Queen Elizabeth 2 for England, and find Arcade and Miss Locke there. While the liner departs, armed Black Air troops gather on the dock.