Magneto; a man embittered by loss. Avalon; a world created for the survival of his chosen people--mutants--sworn to follow a madman's lead. Charles Xavier; the most powerful mind on earth, whose Dream for peaceful co-existence between humans and mutants may be the earth's last hope. Wolverine; the berserker mutant whose adamantium skeleton may be the very thing that destroys him.X-Men! X-Force! X-Factor! And Excalibur! Still reeling from the death of one of their own--they now face their greatest enemy in a battle that could mean the end of the world!