The Ultimates vs. the Ultimate X-Men: the battle begins. When the X-Men do the worst thing they could to humanity the government orders Captain America Iron Man Thor and the rest of the Ultimates to bring them down. A small but lethal army the Ultimates were created to face these and other newly risen threats to mankind. But the X-Men s founder Professor X hasn t been training his students for nothing - and the young mutants just might take out the Ultimates first. Next with the X-Men still licking their wounds from their battle with the Ultimates can Professor Xavier s mutant team possibly survive the return of their most powerful foe? Witness the return of Magneto!