In “Enter: Magneto,” the X-Men face one of their greatest challenges yet. Beast is held for trial after a tense incident, and when the mutant sanctuary is attacked, Magneto seizes the chance to intervene. Sabretooth also appears at the mansion claiming he needs help, adding further tension. Meanwhile, Magneto attempts to hijack a missile base and threatens U.S. targets—forcing the X-Men to race against time to stop him. The issue introduces Asteroid M early in the animated-series tie-in, setting bigger stakes for the mutant conflict to come.