Inspector Sergil is a detective comedy. Sergil, inspector of the P.J., investigates three crimes, helped by two pretty women, Bijou and Nadège.

A young man from Marseille starts a jazz orchestra in Paris.

Toinet, Girelle and Pénible fish for sardines in Marseille. To dazzle their conquests, they present themselves as rich can manufacturers, while the little flower girls play movie stars. A ridiculous suitor wants to discuss a business deal, a potential sponsor appears and the whole tohu-bohu reclaims the songs of Vincent Scotto.

A watchman with a sensitive heart, Fernand falls in love with Violette and Pervenche, two of the daughters of his boss, Maître Arno. At a bullfight starring three attractive Spaniards, the girls and their sister Marguerite - with whom Fernand's companion Rémy is in love - compete in charm, to the despair of both suitors. Followed by Marina, a pretty girl who seems to take a keen interest in Fernand, the two friends decide to retire to Les Martigues, far from their belles. But soon annoyed by Marina's insistence, Fernand returns to Maître Arno's manade, while Rémy decides to become a bullfighter to win back Marguerite.

Antonin, Honoré and Papillote are sailors on the ship "L'Invincible". The three friends are in love with three pretty girls in Toulon: Honoré is in love with Mireille who, as for her, loves Antonin, and Papillote only has eyes for Angèle who, after a fifteen-month-long cruise,presents him a newborn baby that she claims is their son! A new woman appears: Patricia, as sexy as she is mysterious. Antonin, although disconcerted, falls under her spell. What he does not know is that Patricia is not a journalist as she says she is but a secret service agent who has been assigned the mission to investigate Eric Bergen, a shady fellow the trio meets everyday at Arsène's Café.