Rogue seeks a scientist who claims to be able to ""cure"" any mutant of their powers, unaware that neither he, nor his process, are what they appear to be.

A mutant from more than half a century into the future, named Bishop, arrives in the present, attempting to change history for the better, by stopping an X-Man from committing an assassination. But between being chased by a future breed of Sentinel, and the details of his mission being fuzzy, he's got his work cut out for him.