Two friends from the last war, Pierrot, a bar owner, and Gustave, a police inspector, are in contact with a notorious gang of racketeers in Montmartre. Tired of putting up with Albert the King's demands, Pierrot kills the gangster during a bar brawl. His first instinct is to flee, but on Gustave's advice, he turns himself in to the law. All things considered, he'll be safer in prison than exposed to the reprisals of the "underworld". Pierrot goes to trial. He was acquitted as having acted in self-defense. But his release leaves him open to the vengeance of Bob, one of Albert's accomplices. Pierrot narrowly escapes an ambush, but is finally able to rid himself of the threat hanging over him, thanks to the friendship of Inspector Gustave, and finally reunites with the companion of his life, Dora, who has never stopped trembling for him.
as Gustave Martinet
as Pierre 'Pierrot' Lambert
as Dora
as Petit Bob
as Georges, le barman de "L'Ami Pierrot"
as Albert dit "Bébert le Caïd", un gangster qui rackette et persécute Pierrot
as Rita la Gitane, une prostituée
as Dédé, aide de Bébert
as l'avocat de Pierrot
as l'avocat général
as le président de la cour
as Ginette, amie et collègue de Dora/Adrienne
as Baudin, l'imprimeur
as La mère de Dora
as le commissaire de police
as une danseuse
as le patron de "La Nouvelle Eve"
as un journaliste au tribunal
as un policier
