Two unemployed actors accept what they believe to be an acting job from a wealthy man without realizing that he needs two real private detectives.

On the Côte d'Azur, a rich man wins a large sum of money playing at the casino. As he leaves the establishment, he is assaulted and knocked unconscious, his loot stolen. A few days later, the young croupier who had given him his winnings is involved in a motorcycle accident while avoiding a car. The investigation brings the two men together, but the millionaire's wife falls in love with the handsome young croupier. The plot begins...

Alain Revent, a seductive and refined man, derives a peculiar satisfaction from debasing his wives. The first, driven to the brink of despair, throws herself out of a window. Enlisting the help of an equally perverse casual acquaintance, Dino, the "handsome brute" proceeds to emotionally torture his second wife, Nathalie. The sadistic plan is picked up on by Officer Leroy who suspects the truth. Will he be able to snatch the unfortunate woman from the evil Alain's clutches?

Following a car breakdown, Miss Annie, director of a weight loss center, meets a certain Mr. Kelvo, a car champion. But instead of helping her, he rapes her. She decides to take revenge and follows him.

Young Berthe, deeply moved by a cinema screening of the notoriously sultry Le Dernier Tango à Paris, goes to the address where most of the action takes place, a building overlooking the Bir-Hakeim Bridge metro station. Reality suddenly seems to mimic fiction when she discovers not only an apartment advertised for rent, but also a man prostrate in a corner who seems to be waiting for her. Hoping for the same torrid embrace as in the film, she discovers that he is in fact preoccupied only by the apartment's defects. Attempting to embark on a passionate affair, she learns that the man suffers from libido problems.

To improve their sex life, a married couple check themselves into a sex clinic.

Good dope is becoming rare in the North of Paris. Drugstores are being raided by junkies and gangs are nervous, fighting each others: the 'Viets', the 'Blackies', the 'Arabs', the neo-nazis 'Justiciers' and some mean gays. Vincent (Daniel Auteuil) is the good cop coming from Marseilles where he was a gangster. He's a soft method guy but also kicks assses hard and throw lethal dialog lines when needed. With the precious help of 'l'Arbalète'* (Marisa Berenson**), a tox' prostitute ex-member of Vincent's former gang, he will try to put order in that mess. There's also a violent and racist cop (Marcel Bozzuffi), Algeria veteran with hard methods, whose role could be more than to protect and to serve.

Four murders in forty-eight hours happen in Nice. The murderer calls himself "The Exterminator" and the police are unable to catch him. Tom Lepski is an insurance detective and he get involved in the investigation when Liza Mendoza, a famous violinist and a friend, is killed just a few minutes before Tom visit her. After another rich woman killing, Tom finds out that all the victims were members of the exclusive Fifty Club. All of them but Lisa.