When investigating a new mutant, something truly horrible happens to the All-New X-Men that shakes time and space to its core! An event so dire that X-Men from the FUTURE with a message: the all-new x-men must return to the past! Collecting Battle of the Atom #1-2, All-New X-Men #16-17, X-Men (IV) #5-6, Uncanny X-Men (III) #12-13 and Wolverine and X-Men #36-37.