Montmartre in the summertime. A group of street urchins idles outside while the other kids of the neighborhood are away on holiday.To keep the gang busy, Pivolo, their leader, has an idea : they are going to kidnap Aunt Faguet's doggy. Just for the fun of it. A few days pass after the crime is accomplished and one of them suddenly realizes that a reward is being offered by the aunt to anyone who would bring her her pet back. Mademoiselle Hélène, the kind-hearted social worker, does it for them and gives them the reward money, which is instantly exchanged for lollipops, nougat and merry-go-round and cinema tickets. So, why not continue? That's what they do, abducting several dogs, until they realize they are becoming ... too rich! They can't buy themselves luxurious gifts or else their parents are bound to suspect something. Instead, they decide to do good by helping poor people around them. One day, Pierrot, a member of the gang, gets run down by a cyclist and becomes blind.

The king orders viscount Florestan to take mademoiselle de Solanges for his wife. But the viscount doesn't know the young lady at all. The latter decides to seduce her future husband by introducing herself to him with the name Veronique...

Due to financial problems, the boarding-school of Saint-Loup is on the verge of closing its doors. In desperation, Jacquelin, the headmaster, has the idea to invite former students to a fund-raising reunion. Among the alumni, three men whose common point is to have been in love at the time with the headmaster's niece. One is a banker, the second a priest and the last one a globetrotter. All of a sudden, the peace of the assembly is disturbed: Jacquelin's niece has just been murdered.

Au Royaume des Cieux takes place in in a dreadful girls' reformatory. A couple of lovers will try to escape from this living hell.

Napoleon III, the Commune, the third Republic in the background. In the foreground, two pretty, talented sisters, Virginie and Pauline Cardinal. They are ballerinas at the Opera de Paris and very much courted by wealthy, elegant men. They will manage to climb in the society of their time, despite parents set on respectability but also attracted by money.

The rivalry between Albert Gambier, head of the municipal brass band, and the jazz band, led by Jacques Hélian, provokes many comic adventures in this small provincial town. Everything will end in songs, thanks to the love uniting Jimmy, the band's composer, and Nicole, Gambier's daughter.

Unfairly accused of her husband's murder, a woman is imprisoned.

Albert is an eccentric inventor of missiles who comes under fire from his investors when his first prototype explodes. Even his sympathetic mistress has her doubts, as Albert lashes out in a verbal tirade condemning those of little faith in his genius.

In a girls boarding-school run by Madame Piégeois, young Gisèle meets, at night, the count of Champrès' son.

Eager to find a better life abroad, a Senegalese woman becomes a mere governess to a family in southern France, suffering from discrimination and marginalization.