A cavalry troop is escorting a wagonload of convicts on their way to prison through the mountains when they are attacked by a bandit gang. Only a sergeant, his beautiful young daughter, and an assortment of seven sadistic, murderous prisoners survive, and they are left without horses or a wagon. The sergeant must find a way to get his prisoners to their destination while protecting his daughter, watching out for the still-pursuing bandits, and trying to determine which prisoner is the man who raped and murdered his wife.