During an orgy, Some old and wealthy notables are being murdered by a small group of leftist young revolutionaries. Very soon the police are tracking down Virgile Cabral, the leader of the group. Meanwhile, Virgile's brother and only relative, Vincent, a violinist (and a thief), comes back to Paris. They have not seen each other for three years. Vincent does not believe in the revolution. He only tries to live as he wishes to live. But by looking for his hunted down brother, he has no other choice than to be involved in a fight that is not his.

Two police inspectors pursue a dangerous counterfeiter on the run.

Sickened to see his students always sleeping in class, a teacher with a colleague and an anarchist start a war against the television. They climbed on Paris roofs to coat the T.V. antennas with a special product cutting the signal reception.

Codeine has been stolen from Philippe Calaro's pharmaceutical laboratory. The police are investigating and ask the young chemical engineer to remain at their disposal, as one of his direct employees is under suspicion. On his way home from an evening out with a friend, whom the case has forced him not to accompany on a trip, he discovers the corpse of an unknown man in the boot of his car. Distraught, and without thinking about his imprudence, he disposes of the cumbersome and inert passenger in the woods of St-Cloud. After the departure of his girlfriend's plane to Orly, he is accosted by a young girl who tells him she knows the dead man from the previous evening, and begs him to join her on the Air France bus, to disguise the fact that he is being followed.

Matou is an innocuous, gentle-looking man. He is married to a formidable, even a frightening woman, who is as dissatisfied with him as he is with her. He knows everything there is to know about restoring and authenticating manuscripts, particularly ancient ones, through his job at the museum. One day, it occurs to him that his skills could be put to use in a more personal way, and he embarks on a private career of re-arranging the documents of people who have had the misfortune to be married to the wrong people.

Veterinary surgeon William Chaminade is having a peaceful holiday in the South of France when he is witness to an event that will change not only his life but the destiny of France! A young woman tries to kill herself by jumping from the upstairs window of the hotel where he is staying. Thanks to the services of a passing athlete, the woman is unharmed, and she reveals that her distress is down to her husband’s apparent lack of interest in her. Immediately, Chaminade has a brainwave. He will open a special centre for people like this unfortunate young woman, who will be able to satisfy their romantic needs, at the tax payers’ expense. All is well until this innovative ’pleasure centre’ draws the attention of an over-zealous tax inspector, Dupuis...

During the 1960s, two American jazz musicians living in Paris meet and fall in love with two American tourist girls and must decide between music and love.