After the re-emergence of the world's first mutant, world-destroyer Apocalypse, the X-Men must unite to defeat his extinction level plan.
Ballerina Dominika Egorova is recruited to 'Sparrow School,' a Russian intelligence service where she is forced to use her body as a weapon. Her first mission, targeting a C.I.A. agent, threatens to unravel the security of both nations.
Jean Grey begins to develop incredible powers that corrupt and turn her into a Dark Phoenix, causing the X-Men to decide if her life is worth more than all of humanity.