X-Men: The Last Stand (2006)

A pharmaceutical company called Worthington Labs develops a "cure" for mutation and The X-Men are divided on that! Meanwhile, Jean Grey resurfaces as the Phoenix! The team must confront the threat posed by Jean Grey's destructive capabilities while also contending with the Brotherhood of Mutants, led by Magneto who sees the cure as a threat to mutant-kind! Whether this is the beginning or the end of an era, you will have to find out!