当警察们闯入富人们所举办的地下格斗俱乐部后,他们发现里头竟然设置了“七级地狱”,每一级都有许多死亡格斗者的尸体。A former marine is trapped in an elite underground fight club. When cops swoop in they discover only one man left alive, him. But all is not as it seems. Is he the sole survivor or a mass murderer?