捷克布拉格,职业杀手乔(Nicolas Cage 饰)完成了一次任务,手法老道。长久以来,乔信奉的四个原则让他冷酷无情的完成一次次任务并活在所有人的视线之外,但这种漂泊无定的孤寂人生教人厌倦,乔决定前往曼谷,在那里完成最后四次任务。 乔在曼谷灯火缭乱的街头物色到一位当地扒手康担任自己的助手兼翻译,负责与泰国雇主接头。乔很快完成了第一次任务,付出了右臂擦伤的代价,到药房寻求帮助的乔遇见聋哑姑娘Fon(杨采妮 饰),后者温柔的态度让乔的心中萌发了牵挂……康在接头的途中被一群流氓殴打,满身伤痕的康打动了乔,乔传授他战斗的技巧,自己冷酷的原则也开始发生动摇。 乔的最后一次任务是刺杀一位敢作敢为的正派政治家,康的话犹在耳边让他迟迟不能动手。另一方面,泰国雇主恐怕事情败露而欲杀人灭口。乔与黑帮雇主的战斗不可避免……Joe is a professional hit man who picks someone off the street to do his errands, and after he is finished kills that person. His next assignment takes him to Bangkok, and as usual, he finds a street-wise guy named Kong to help him. After Kong has a close call and learns who Joe is, Kong asks him to train him and he does. Joe also meets a local girl who is deaf and spends time with her. However, Joe has a hard time keeping his other life from her. It also appears that the person who hired Joe, breaks his rule of complete anonymity and tries to find him.