Tino is a painter and occasionally a singer. When he has an opportunity to replace an absent singer, he becomes a sucess as a masqued singer, "Le chanteur masqué". Lisa is a typist who becomes a successful singer, also as a masqued singer, "La chanteuse masquée". Tino the painter falls in love for Lisa the typist, not knowing about her "masqued" activities. On the stage they are rivals.
Germaine Moreuil's insane jealousy triggers such violent marital quarrels that the spouses file for divorce. When Germaine's parents find out, they sham a fierce spat to disgust their daughter and her husband with the pathetic spectacle of a couple at loggerheads. But just as their farce is on the brink of becoming a tragedy, events combined with the blunders of all four happily reconcile everyone.
A florist in a nightclub in Montmartre, a good, naive man is manipulated by a gang of gangsters who use him to smuggle drugs.
