居住在新泽西的黑帮杀手“鬼狗”（Forest Whitaker弗雷斯特•惠特克 饰）身为非裔，却浸淫在日本武士道的精神世界里，“忠义”为其平生最高信条。他深居简出，不苟言笑，日常与老大靠飞鸽传书联系。鬼狗视老大路易（John Tormey 饰）如亲生父亲，接到命令后决不手软，手起刀落，血浆四溅。 　　孤独的他也有可以交心的朋友，闲暇时与公园买冰淇淋说法语的非裔聊聊天，各说各话，却也有趣；或与爱看书的小女孩交流品读《罗生门》的心得。 　　鬼狗活在自己的世界里，但周遭已发生巨大变化。终于有一天，他被路易抛弃，成为帮派倾轧的牺牲品……A hitman who lives by the code of the samurai, works for the mafia and finds himself in their crosshairs when his recent job doesn't go according to plan. Now he must find a way to defend himself and his honor while retaining the code he lives by.