After the re-emergence of the world's first mutant, world-destroyer Apocalypse, the X-Men must unite to defeat his extinction level plan.

The ultimate X-Men ensemble fights a war for the survival of the species across two time periods as they join forces with their younger selves in an epic battle that must change the past – to save our future.

Mia is a rebellious teenager on the verge of being kicked out of school. Her hard-partying mother, Joanne, neglects Mia's welfare in favor of her own, and her younger sister hangs out with a much older crowd. Sparks fly between Mia and Connor, Joanne's new boyfriend, and he encourages Mia to pursue her interest in dance. As the boundaries of the relationships become blurred, Mia and Joanne compete for Connor's affection.