The X-Men are shaken to the core by the fallout from Battle of the Atom! Kitt y Pryde and the All-New X-Men's faith in Wolverine's Jean Grey School has been completely eroded...so where have they gone instead, and what will they do? Meanwhile, X-23 joins the All-New X-Men - and sets her hunter's sights on Cyclops?! What does this mean to Jean Grey? When Jean and X-23 are forced to team up against a mysterious force, she'd bett er figure it out fast! Then: ring in the X-Men's 50th anniversary with new stories from some of the greatest creators to ever work on Marvel's mutants!