After a successful bank robbery, Micky hopes to take back his girlfriend Marie who has been taken from him. On the way to Paris he meets Leon, a neurotic dreamer whom he considers an idiot. Leon can hardly understand what Micky is up to but he follows him everywhere and soon falls in love with Marie.

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.

In 19th century France, Jean Valjean, a man imprisoned for stealing bread, must flee a relentless policeman named Javert. The pursuit consumes both men's lives, and soon Valjean finds himself in the midst of the student revolutions in France.

A man's car somehow becomes completely autonomous and takes the powerless driver, to a scrap yard, or a 'cemetery for cars', where several more vehicles are waiting to be crushed by powerful reducing machines, their passengers still inside.

Thomas engages in a strange game of billiards with an invisible opponent.