Captured international assassins are locked up inside a high-tech bunker known as the Killing Chamber. To break out of this concrete hell they must duel each other, fight deadly ninjas and battle against gangs of masked maniacs. And... if they survive this, they will have to confront Snakehead: the lethal, deranged top dog who will stop at nothing to kill 'em all! 占领国际刺客被锁在高科技掩体称为杀戮室。打破这一具体地狱他们必须互相对决,打击致命的忍者和对抗帮派蒙面疯子。与…如果他们生存,他们将不得不面对蛇头:致命的,疯狂的狗谁将不惜一切代价,把他们都杀了!