Puppet Master makes a model of Professor X and commands him to send the X-Men after the FF. When Xavier regains control of his senses, the Mad Thinker sends in his Android to finish off both teams.; Xavier has tracked down Lucifer, who cost him the use of his legs, but finds his foe's heartbeat is rigged to a giant thermal bomb. The X-Men arrive in Bavaria and run across the Avengers who have also just arrived. The X-Men have to stop the Avengers from defeating Lucifer since by defeating Lucifer, the world will be destroyed. After Xavier gives Lucifer a mind blast that renders him unconscious, he contacts his team for help and the Avengers agree to let the X-Men clean up the current crisis on their own. Cyclops uses his eye beams to disable Lucifer's thermal bomb.; Banshee calls to the X-Men for help against a mysterious spider creature, and when the young mutants run across Spider-Man, they mistake him for their foe and a battle ensues.; Wolverine starts a fight with his new teammates in the X-Men.