Taking place immediately after the events of the 1990 crossover "Days of Future Present", a group of Genoshan Magistrates (soldiers of the country of Genosha), backed by the cyborg Cameron Hodge, and including an amnesiac Havok (a member of the X-Men), attack the X-Mansion and kidnap Storm and the New Mutants Warlock, Boom-Boom, Rictor, and Wolfsbane. Warlock is killed and Storm and Wolfsbane are brainwashed, turned into mindless mutate slaves, which form the backbone of the Genoshan economy and lifestyle. Cable, the New Mutants, Gambit, Forge, and Banshee recruit X-Factor and head to Genosha to save their teammates. They are soon joined by Wolverine, Psylocke, and Jubilee, who independently head to Genosha to rescue their friends.
In the end, the X-Men defeat the forces of Genosha and Cameron Hodge's severed head is buried alive by Rictor, who uses his earthquake-inducing powers to topple the Genoshan capital building "The Citadel" onto Hodge. Storm, whose body had been physically regressed into that of a child in an earlier story, albeit with her adult memories and personality intact, was freed of the brainwashing, and regained her adult form. Wolfsbane was also freed from her brainwashing, but was trapped in a lupine form permanently. Havok (having gotten his memories back) elected to stay in Genosha along with Wolfsbane to help rebuild the now anarchic country and keep it from civil war between its human and mutant population.
Published during the comic book speculator boom, the involvement of Jim Lee and Rob Liefeld caused the issues of the crossover to sell for $10-20 on the secondary market when the books were first published, though the issues have since gone down in value.