After finding and adopting a child, a man gets a job at an all-girls school which doesn't allow families. Once the girls find the baby, they become his forty little mothers. At the same time, the child's true mother searches for him.

Albert is the irremovable waiter in a small bistro that has just been sold by his former bosses, Angèle and Léon. Angèle, having forgotten the ten million paid by the notary in a cab, prefers to feign madness rather than incur her husband's wrath; but Léon, in turn, eventually learns what has happened to his money, goes mad and kicks out the honest cab driver who comes to return the lost sum. A phone call from the police station later informs Albert that the money is at his boss's disposal; but as the boss is now in an institution, Albert borrows his identity papers and goes to collect the money - which he pays in full to the pari-mutuel betting house. After a series of shocks and counter-shocks, Angèle and Léon regain their senses enough to watch for the outcome of the race, and share with Albert the final winnings, which are very substantial.

An out-of-work professor gets a break from an old college buddy to teach at an exclusive girl's school. But events conspire against him: he finds an abandoned child which he takes under his wing, despite the school's rules against teachers having a family; and the girls in the school resent his replacing a handsome and popular teacher, and do everything in their power to get him fired.

Jules and Fernand are two boys from the Café des sports in Marseille who take part in their corporation's annual race.