Franck Poupart is a slightly neurotic door-to-door salesman in a sinister part of Paris' suburbs. He meets Mona, a teenager, who's been made a prostitute by her own aunt. Franck would like to change his life and also save Mona from her aunt. Murder is the only solution he finds to achieve his goal... A very gloomy movie, exuding dispair and uneasiness, with pathetic characters...(艺术本来是弥补人生和自然的缺陷的，一切美的事物，都需要我们自己去发现和经营。)