A woman suffering from amnesia reconstructs her life from audiotapes and discovers that she has had a sordid past, involved in prostitution, and unusual romantic relationships.

Thanks to the complicity of his friend Laura, Jo, sentenced to 20 years in prison, escapes from the central prison. Hiding in an old disused mill, Jo sends his young friend to a certain Freddy, gangster and nightclub owner in Pigalle, who owes his freedom to Jo's silence. But Freddy sends two of his henchmen to the mill where Jo is hiding, to kill her.

Somewhere in Europe, a scientific research institute, houses the lair of one of the leaders of a terrorist organization called The Black Hand. Zhan Raur, who is suffering from a delirium of power and also from a heart condition, awaits the visit of an unknown correspondent carrying precious documents. But the F.B.I. He has been replaced by one of his agents, Thomas Asher, who is responsible for unlocking the secrets and ramifications of The Black Hand.

Jeff, a notorious gangster, has just served 3 years in prison for pimping. He reunites with his accomplices and sets up a cigarette smuggling business, all the while maintaining a perfect alibi. We're in Dieppe, and the bustling harbor life allows a wide variety of people to indulge in a variety of trafficking activities.

Lydia, a model, and Helga, a flight attendant, live together and share the rent. Lydia gets a job in a cabaret, but the owner soon asks her to become a trainer, which she refuses. To punish her, he locks her up in his house. Thanks to her friend Helga, the police take a closer look at the manager's reprehensible actions.

The story of a hotel boss that, from time to time, observes the couples in the rooms and even films them.

Pascal and Martine are married, have children, but are getting bored with each other. Pascal is tempted by a beautiful salesgirl with whom he finally has a date. But the bombshell promised more than she actually delivers. On the other hand, he is attracted to his precocious niece Sophie. But he only becomes her confidant, living vicariously her first sentimental experiences with boys of her age. On her part, Martine winds up responding to the advances of her office manager who has been trying to pick her up for months. She follows him to his apartment but the alleged Don Juan is nothing but a boor who prefers to watch a soccer match rather than to make love to her. In frustration, she leaves him sprawled before his set while she returns to Pascal. They realize their extramarital experiences have reinforced their couple and can now live happily ever after.