The maverick and skilled killer Jack (George Clooney George Clooney) comes to an idyllic town in rural Italy and plans to wash his hands after this mission-assembling a special rifle for the female killer. In this relatively simple and calm environment, Jack, who was originally low-key and cautious, unexpectedly established a deep friendship with local residents. Not only that, he also met the beautiful prostitute Clara (Violent Placido Violante Placido), a romantic love thus unfolded. However, the last task of this killer's career is far from as simple as imagined. This film is based on Martin Booth's novel A very low-key Gentleman.