Résumé: Missing for months, Professor X seemingly returns - and debuts an All-Newer, All-Different-er team of X-Men! But when this new group kidnaps Shadowcat, something seems off to the real X-Men. When the truth is revealed, it'll spark a globetrotting hunt for Charles Xavier! The search will lead to a showdown with the re-formed - but far from reformed - Brotherhood of Evil Mutants...and reveal the menace of Cerebro?! But for the Children of the Atom to survive, must Professor X die? Plus: Gambit's back! But so is the Juggernaut! Meanwhile, Colossus has a ghostly Christmas, Kitty Pryde and Marrow play cat and mouse with the terrorist Flag-Smasher, and the X-Men find themselves trapped in a land of epic fantasy!