Traumatised by a serious accident, truck driver Georges Moreau knows that he must avoid strong emotions and any kind of stress. Recently wed, he hopes to start anew by opening a restaurant on the National 7 highway, although he's none too pleased when the truckers start flirting with his lovely wife. Opposite the restaurant is a petrol station owned by Pieri, whom Georges begins to suspect of having an affair with his wife. Doubtful of her fidelity, Georges realises that he's heading for a nervous breakdown.

Having recently moved into her new apartment, Irène Cazenave, the widow of a well-known police officer, is forced by one of her husband's colleagues to take part in an investigation. The building's provocative concierge has been found murdered. We watch a parade of suspects, only to learn at the end that Irène killed the janitor under blackmail. She kills herself.

A father and son go to Paris to help each other find love.

Henri Chatelard is well into his forties, owns a restaurant and a cinema in the city, and appreciates women. When he meets Marie, an 18-ish strong-head who just lost her father in a small fishing village, it is not clear who is the hunter and who is the prey.

An American traveling in Europe suddenly disappears, and his daughter, married to an eminent scientist, receives a letter asking her to go to Antwerp, which she does with her young son. Both are about to disappear. OSS 117 is asked by his superiors to solve these mysterious disappearances.