During a rescue mission in space, Jean Grey (Sophie Turner) is nearly killed when she is hit by a mysterious cosmic force. Once she returns home, she begins to develop incredibly powerful psionic abililites that corrupt her and threaten to destroy the universe, leading the X-Men to decide whether her life is worth more than all other living beings.
Wrestling with this entity inside her, Jean unleashes her powers in ways she can neither comprehend nor contain. With Jean spiraling out of control, and hurting the ones she loves most, she begins to unravel the very fabric that holds the X-Men together. Now, with this family falling apart, they must find a way to unite — not only to save Jean’s soul, but to save the planet from aliens who want to weaponize this force and rule the galaxy.
Witnessing an alien encounter as a little girl and seeing her parents neuralized by two men in black, a young woman (Tessa Thompson) spends her entire life in search of the mysterious organization they belong to until she finally finds them. Making her way into their headquarters, she encounters Agent O (Emma Thompson) and makes her case to join the Men in Black. Due to her determination, she is made a probationary agent and given the codename Agent M.
Assigned to the London branch to aid in an investigation, Agent M is partnered with the local hot shot Agent H (Chris Hemsworth). When it becomes apparent that there is a mole within the organization, it forces the two agents on the run, unsure of who they can trust. Now the two must work together to uncover the mole, tackle the new threat and save their organization.
Based on the Malibu Comic by Lowell Cunningham.