X-Men: The Last Stand (2006)

In 1986, Charles Xavier and Erik Lehnsherr meet young Jean Grey at her parents’ house to invite her to join their school, the X-Mansion. Ten years later, the industrialist Warren Worthington II discovers his son is a mutant as he tries to cut off his wings. In the present, Worthington Labs announces it has developed an inoculation to suppress the X-gene that gives mutants their abilities and offer the “cure” to any mutant who wants it. The cure is created from the genome of a young mutant named Jimmy, who lives at the Worthington facility on Alcatraz Island. While some mutants are interested in the cure, including the X-Men’s Rogue, many others are horrified by the announcement. Magneto re-establishes his Brotherhood of Mutants with those who oppose the cure, warning his followers that the cure will be forcefully used to exterminate the mutant race.

With help from Pyro, Magneto recruits Callisto and several other mutants. They attack the mobile prison holding Mystique to free her, also freeing Multiple Man and Juggernaut. Mystique, shielding Magneto from a cure dart, is hit by it and loses her mutant abilities. Magneto abandons her as a result. Meanwhile, Scott Summers, still distraught over the loss of his fiancée Jean Grey, drives to her resting location at Alkali Lake. Jean appears to Summers but, as the two kiss, Jean kills him. Sensing trouble, Xavier sends Logan and Storm to investigate. When they arrive, they find only telekinetically floating rocks, Summers’ glasses, and an unconscious Jean.