Professor Xavier warns the X-Men about an impeding event that wipes half the mutant population: Nitro will self-detonate in Genosha. The Brotherhood “rescue” Nitro from a government prison against his will and use Psylocke to control him, planning to use him as a weapon. The X-Men chase the Brotherhood in order to prevent Genosha’s destruction.
Introducing characters: Nitro and Psylocke
Guest stars: Grey DeLisle, Michael Ironside, and Liam O’Brien