With work hard to come by, musician Jacques Hélian and his orchestra end up working in an unpopular night club in the Pigalle district of Paris. The club’s owner, Monsieur Jo, is mixed up with a band of gangsters and has to resort to robbing a bank to keep his business solvent. Seeing that Jo now has money, Hélian demands payment for his musicians. He is duly paid but a short while later he is attacked and the money stolen. On discovering that the money has ended up back in Jo’s safe, the musicians reclaim the money and hastily quit the scene. A short while later, the musicians and staff of the Pigalle night club are re-united, working together in a basement night club in Saint-Germain. The club is frequented by young existentialists and proves to be a great success – at least until Jo’s gangster friends put in an appearance… —Filmsdefrance.com