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.

After waking up with mysterious wounds on his hands, a champion fighter finds himself in an otherworldly battle against evil forces that wreak havoc in the human world.