Traumatised by the death of an innocent. Killer for hire Bradley drops out of society, seeking meaning roaming the dangerous streets of a tough inner city ghetto. When he encounters a savage pimp and a desperate woman under his control Bradley finds the means to give battle to the inner demons that have eluded him. He embarks on a quest to save a young girl from the clutches of the brutal gangsters that trade human beings as currency. Drawn deeper into a sickening world in which age is no bar to exploitation and pursued by police, gangland villains and a mysterious agency known only as The Executive. Bradley discovers an ever deepening web of corruption and vice, and a dangerous game in which nothing is what it seems and no one can be trusted.
克里斯蒂安·沃尔夫（本·阿弗莱克 Ben Affleck 饰）具有破解复杂难题的天赋。当一位旧识惨遭谋杀，并留下一条“去找会计师”的神秘讯息后，沃尔夫不得不开始追查此案。当他发现得用更极端手段时，沃尔夫找了他久未连络、同时是名顶尖杀手的弟弟布莱斯顿（乔·博恩瑟 Jon Bernthal 饰）合作。兄弟俩与美国财政部副局长玛莉贝丝·麦迪纳（辛希亚·阿戴-罗宾森 Cynthia Addai-Robinson 饰）联手，一起揭露这桩致命阴谋，却让他们成为冷血杀手集团的目标，这群杀手无所不用其极也要掩盖秘密。
