Rogue, Gambit and Danger go to join the X-Men in San Francisco, only to find it in flames. The Dark Avengers have come into town and are taking no prisoners. Wait, the whole problem is that they ARE taking prisoners. Norman Osborn has the city of San Francisco in the palm of his hands and mutants are being forced to take sides. Will they side with Cyclops and the X-Men? Or go to Osborn and his Dark X-Men? What side will the returning mutants and one of the X-MenĘs most powerful foes take?