Humanity now faces mutants, a mysterious sub-species that is gifted with strange and frightening powers. Hidden among the population. they are feared and hated by their human cousins. As rumors and urban myths about their existence spread across the world, the US government creates its own initiative to deal with this threat: the Sentinel Project. Meanwhile two men wage a secret war for the hearts and minds of young mutants everywhere. Charles Xavier has recruited a cadre of students including Cyclops, Jean Grey and Beast, that call themselves the X-Men. But there are others out there, living in fear, struggling to deal with what they are: Ororo Munroe, Bobby Drake and another, more dangerous mutant named Logan. Simultaneously, the terrorist known only as Magneto has assembled The Brotherhood, a militant group dedicated to the overthrow of human authority. A war is on the horizon and these amazing young men and women will decide the future of all humanity! Collects Ultimate X-Men (2000) #1-6.

The world tour is over. It ended abruptly and tragically, with deaths and hard decisions. After returning home to Westchester, the X-Men attempt to continue on, bringing normalcy back to their lives as best they can, opening the school to students once more. However, just as everything settles back to the mundane, Jean Grey's life shifts towards the bizarre. Her mental barriers are starting to erode, as she begins to see things... like a giant bird composed of flames. Ultimate X-Men (2000) #21-25.

Hard lesson: Storm travels to the Great White North to find Wolverine, only to discover an all-new threat to the Ultimate Universe.

Collects Ultimate X-Men #26-33. Magneto, the X-Men's deadliest villain, returns. They've faced the Weapon X program, Proteus and even the superhuman strikeforce known as The Ultimates. Now, still licking their wounds from their prior battles, can Xavier's mutant team possibly survive the return of their most powerful foe?

Collects "Ultimate X-Men" issues 26-33 and "Ultimate War" 1-4, in which anti-mutant sentiment spreads dangerously across the country and the X-Men find themselves looking to Magneto as an ally in order to survive.

Humanity now faces mutants, a mysterious sub-species that is gifted with strange and frightening powers. Hidden among the population. they are feared and hated by their human cousins. As rumors and urban myths about their existence spread across the world, the US government creates its own initiative to deal with this threat: the Sentinel Project. Meanwhile two men wage a secret war for the hearts and minds of young mutants everywhere. Charles Xavier has recruited a cadre of students including Cyclops, Jean Grey and Beast, that call themselves the X-Men. But there are others out there, living in fear, struggling to deal with what they are: Ororo Munroe, Bobby Drake and another, more dangerous mutant named Logan. Simultaneously, the terrorist known only as Magneto has assembled The Brotherhood, a militant group dedicated to the overthrow of human authority. A war is on the horizon and these amazing young men and women will decide the future of all humanity! Collects Ultimate X-Men (2000) #1-6.