Between 1978 and 1979, the inhabitants of the Oise are in fear of a maniac who kills several hitchhikers and escape the police. He was then dubbed "the killer of the Oise" is actually a shy young policeman who will investigate his own murder, only to lose control of the situation.

Paris, 1982. Franck and Serge are police investigators in charge of making a good catch in the Parisian porn industry. In order to infiltrate the mafia, they take over a peep show in Pigalle riddled with debts. In attempt to jump start the business, they begin to produce short porn films.