When the members of the Fantastic Four and X-Men learn that a creeping menace aboard the Simulcra is far more dangerous than they imagined, the groups join forces to defeat evil and save the world.
Presents previously untold stories about Cyclops, Marvel Girl, Angel, Beast, and Iceman, who were the five original X-Men characters, as they fight some of their first battles and develop teamwork skills. 'Collects "X-Men: First Class" no. 1-8.
Provides information about Wolverine, discussing his childhood, mutant abilities, adamantium-strengthened skeleton, past activities, enemies, and work with the X-Men.
After sixteen million mutants were killed, and the small nation island of Genosha was destroyed, the X-men encounter new challenges with the Shi'ar Empire and train new mutants.
Collects no. 19-24 of "Astonishing X-Men" and no. 1 of "Giant-Size Astonishing X-Men," in which the team of super-powered mutants rushes to save the Earth from the destructive plans of the Breakworld.