Jean Grey returns from the dead, but her psychic powers have evolved into a primal, destructive force called "The Phoenix." She becomes a wild card that both Professor X and Magneto try to control. 2. Key Players & New Faces
There is a post-credits scene that is crucial for understanding the fate of a major character. 5. Why It’s Controversial
A pharmaceutical company develops a "cure" for the X-gene. This divides the mutant community: some see it as a choice for a normal life (Rogue), while others see it as a threat of genocide (Magneto).