市川进是一个年迈的小说家，性情冷酷。由于出版商觉得他写的小说太过时，很长一段时间内，他的手稿都没有被采用。但他除了是小说家之外，还是一名传说中的静默杀手。然而事实是他从没有对任何一个人开枪，他所做的都是帮真正的杀手今西调查目标人物——而这也是来自他好友石田的委托。善恶终有报，当石田成为黑手党的目标后，市川意识到自己的生命也危在旦夕。Ichikawa pretends to be a legendary hitman. But the truth is, he's a pensioner trying to become a hard-boiled crime writer. He accepts hit jobs and passes them on to a real professional only so that he can write about them in detail. It's all fun and games for the old man until his wife starts to suspect him of having an affair, and his hitman alter ego ends up on an actual hit list.