In "X-Men: The Last Stand," directed by Brett Ratner, tensions rise as a cure for mutations is developed, dividing the mutant community. When a radical faction led by Magneto seeks to destroy the cure, the X-Men, led by Professor Xavier and Storm, must intervene to prevent a mutant war. Meanwhile, Jean Grey, reborn as the powerful Phoenix, struggles to control her destructive impulses, posing a threat to both humans and mutants. The film explores themes of choice, sacrifice, and the consequences of power as the X-Men confront their greatest challenge yet in a battle for the future of mutantkind.