Que personne ne sorte

Dressed as a clown, the clever rascal Grimm holds up the most secure bank of Montreal and takes 30 hostages. While confusing and ridiculing the police with his strange behavior, he calmly manages to rid the bank of a fortune. But then an unsatisfied companion arouses trouble...

Alphonse Tram is unwittingly involved in several murders despite having no memory of committing the crimes. His confusion lead him to confess to his neighbour, Inspector Morvandieu. Alphonse and Morvandieu become the axis around which murders occur.

A sleazy Paris nightclub owner and ex-detective flies to Hong Kong to rescue the young son of a friend murdered by the Chinese mob.

Three little criminals get a tip for a great coup with lots of money in it. Unfortunately they lack the starting funds to buy the required welding torch. So they persuade their successful colleague Alphonse to join their team. But the well thought-out coup fails, and Alphonse is the only one of them who ends up in jail for several years. When he's released, he's out for revenge.

The story takes place in the racecourses around Paris. A so-called major sells his tips to naive characters.