Dr. Génessier is riddled with guilt after an accident that he caused disfigures the face of his daughter, the once beautiful Christiane, who outsiders believe is dead. Dr. Génessier, along with accomplice and laboratory assistant Louise, kidnaps young women and brings them to the Génessier mansion. After rendering his victims unconscious, Dr. Génessier removes their faces and attempts to graft them on to Christiane's.
Michel takes up pickpocketing on a lark and is arrested soon after. His mother dies shortly after his release, and despite the objections of his only friend, Jacques, and his mother's neighbor Jeanne, Michel teams up with a couple of petty thieves in order to improve his craft. With a police inspector keeping an eye on him, Michel also tries to get a straight job, but the temptation to steal is hard to resist.
An aging gangster, Fernand Naudin is hoping for a quiet retirement when he suddenly inherits a fortune from an old friend, a former gangster supremo known as the Mexican. If he is ambivalent about his new found wealth, Fernand is positively nonplussed to discover that he has also inherited his benefactor’s daughter, Patricia. Unfortunately, not only does Fernand have to put up with the thoroughly modern Patricia and her nauseating boyfriend, but he also had to contend with the Mexican’s trigger-happy former employees, who are determined to make a claim.
