From the publisher:

It’s a blast from the past as Professor X’s original five students — Cyclops, Marvel Girl, Iceman, Angel and Beast — are plucked from the past and brought to the present. But what they find, the state their future selves are in and the state of Xavier’s dream, is far from the future they dreamed of. How will these young, idealistic heroes react when faced with the crushing knowledge of what their future holds? And how will the embittered X-Men of the present day deal with their past coming crashing forward? When the original team comes face to face with their counterparts, it isn’t a peaceful meeting — and one of the X-Men will be forever changed. Brian Michael Bendis and Stuart Immonen blaze a new trail for the X-Men! Collecting ALL-NEW X-MEN #1-5.