The world has acquired a lethal new weapon against X gene mutants, whose superhuman powers separate them for better, for worse, forever from ordinary mortals. Now, for the first time, mutants have a choice: retain their godlike abilities, though their powers may isolate and alienate them, or surrender them and become human. The mutant antibody is called a cure, but its invention may trigger a struggle that destroys every living soul on Earth.
As Magneto declares all-out war against humanity and its dreaded cure, the U.S. president mobilizes the military. But it is Charles Xavier and the X Men who truly must brace for the ultimate battle, for they alone are powerful enough to determine the outcome.
Lessons of the past are useless in the coming life and death conflict, as new players mutants possessing unprecedented, unearthly skills take center stage. With so many joining forces with Magneto's evil Brotherhood, the X-Men will face their ultimate test against an enemy whose forces far outnumber their own.
Now, as the world trembles, the Phoenix slowly rises. . .