Roy Blood had been locked in Yuma Territorial Prison for the attempted murder of U.S. Deputy Marshal Harold Stampede. But the outlaw has managed to break out and take a dozen hardened convicts with him as they sweep a path of violence across Southern Arizona. The leader of the gang has sworn an oath to kill the deputy marshal for shooting dead his partner, Jimmy So-Fast. And Marshal One-Eyed Jack Black intends to do whatever he can to stop him and protect the citizens of Cochise County – all this, while an unsuspecting killer is on the loose in Peirce City during the lawmen’s absence.