弗兰克•普帕特(Franck Poupart)是一位有点神经质的上门推销员，住在巴黎凶险的郊区。他遇见了蒙娜，一个十几岁的女孩，她被自己的阿姨变成了妓女。Franck想要改变自己的生活，也想从她的姑姑那里救下Mona。谋杀是他找到的实现目标的唯一…

Francois, a sympathetic factory worker, kills Valentin with a gun. He locked himself in his furnished room and starts remembering how he was led to murder. He met once Francoise, a young fleurist, and they fell in love. …