Rémi Chauveau, ten years old, lives in a broken home. He first experiences an austere boarding school and then an authoritarian and abusive nanny. Teenager, he works as butcher in Paris. On Saturday, he made “silly little things” that sometimes lead to prison.
When the boss' unlucky daughter is missing in South America, Campana is sent to watch the boss' most unlucky employee who is sent as a private detective in hopes he can duplicate the daughter's mistakes.