In a desperate bid to save Xavier's dream, the Beast brought the original X-Men forward to the present. Now, with the timeline in jeopardy from their presence, they must go back. But faced with the horror of what fate would have in store for them, young Cyclops and Marvel Girl are intent on staying. And as debate rages and tempers flare, the X-Men of the future arrive with a dire warning, seeking to prevent history's greatest mistake! Collecting: All-New X-Men 16-17, Uncanny X-Men 12-13, Wolverine & the X-Men 36-37, X-Men: Battle of the Atom 1-2, X-Men 5-6
| ISBN: | 9780785189077 |
| Publication date: | 22nd July 2014 |
| Author: | Brian Michael Bendis, Jason Aaron |
| Illustrator: | Frank Cho |
| Publisher: | Marvel Worldwide, Inc. an imprint of Hachette Book Group USA |
| Format: | Paperback |
| Pagination: | 248 pages |
| Series: | X-Men |