Collects Avengers #368-369, Avengers West Coast #101, X-Men #26, Uncanny X-Men #307 and Black Knight: Exodus #1. The X-Men and Avengers head for Genosha where civil war has erupted and Exodus & Cortez have arrived to fan the flames! Can even the X-Men and Avengers combined bring peace to a nation at war and defeat two madmen?