While under heavily armed guard, the dangerous convicts aboard a cargo ship unite in a coordinated escape attempt that soon escalates into a bloody, all-out riot. But as the fugitives continue their brutal campaign of terror, they soon discover that not even the most vicious among them is safe from the horror they unknowingly unleashed from the darkness below deck.
It\'s 1874 and the Texas Rangers have been reorganized. But Sam Bass has assembled a group of notorious outlaws into a gang the Rangers are unable to cope with. So the Ranger Major releases two men from prison who are familiar with the movements and locations used by Bass and his men and sends them out to find him.