The tension between the X-Men, the refugees of the 198 and the Office of National Emergency's Sentinel guard dogs has finally reached a breaking point. As the superhuman Civil War rips apart the Marvel Universe, the X-Men also find themselves crumbling from the inside out. Will they admit defeat, or will they finally start to fight back? As a prominent member of the team breaks ranks to join the Pro-Registration movement, and a member of the 198 plots revenge from within, the original X-Men go rogue in search of the truth. Collecting: Civil War: X-Men 1-4, Handbook Pages