Three of the 21st century's most celebrated writers propel the Ultimate X-Men to ever greater heights! The X-Men must ally with Spider-Man and Daredevil to help Wolverine fight a secret from his mysterious past. Then, the U.S. government enters the mutant training business - and Emma Frost is in charge of the new class! But the shocking death of one of their own leaves the remaining X-Men struggling to deal with the loss - and when Mr. Sinister arrives, he plans to give them even more to mourn! Gambit returns, Longshot is the lucky survivor of a murderous mutant reality show, and Storm searches for Wolverine! Plus, is Ultimate Juggernaut ultimately unstoppable? Who is Magician? And is Jean Grey really the cosmic entity called Phoenix?!