自诩行侠仗义、绝不伤害人命的劫匪帕克（杰森·斯坦森 Jason Statham 饰）带领同伙洗劫俄亥俄一座游乐场，谁知最后关头却遭背叛，身受重伤，命悬一线。侥幸逃生的帕克迅速从医院逃出，他有条不紊搞来现金，准备假证件。为了讨回自己应得的那份钱，他查到同伙梅兰德（麦克·切 克里斯 Michael Chiklis 饰）等人的消息，一路尾随前来。与此同时，有着芝加哥黑手党背景的梅兰德等人察觉到帕克的行踪和动机，也唆使杀手追杀这个难缠的对手。围绕着这笔不义之财，交织着人性欲望的杀戮随即展开…

Sometime in the near future, paraplegic prison inmate Matt Mills meets "The Board" of Satoshi-Telefair Industries, who thank him for joining the Program. Under pressure and with a promise to make him walk again, Mills agrees to volunteer. He is injected with a synthetic nanomaterial and suffocated, only to wake up with restored use of his legs, yet alone in a steel cell in the first spoke of an experimental apparatus - The Wheel. A series of assailants inflict a multitude of damage to Mills' body and torment his mind, yet the synthetic nanomaterial not only restores his damaged organs, it re-engineers his strength. The experiment might be designed to kill, but Mills is determined to survive - and get back to his daughter before The Board finds her first.

因为一次意外，身经百战的杀手弗兰克（摩根·弗里曼 Morgan Freeman 饰）失手被抓，然而，在被押解的途中，弗兰克一行人竟然遭到了同伙的袭击，重伤的法警和弗兰克一同掉入了河中不知去向。
　　雷（约翰·库萨克 John Cusack 饰）带着儿子克里斯（Jamie Anderson 饰）准备进行一场有趣的野营，没想到河流中竟然飘来两名男子，正是法警与弗兰克两人。法警告诉雷，弗兰克是一名重刑犯，他嘱咐雷务必要将弗兰克送至法院。而弗兰克是一个有原则的杀手，他的原则就是无论如何一定要将目标置于死地。一边是执着正义的雷，一边是老奸巨猾的弗兰克，在这两人之间，一场没有硝烟的战争拉开了序幕。