An unemployed maid is hired in a music hall to wash the floors. The whim of a screenwriter makes her go on stage in the most basic outfit. A revelation, success is at his doorstep! However, the young woman would prefer a virtuous life and a serious marriage to the easy but immoral existence offered to her by the world of entertainment.

Maurice Vallier, nicknamed "Ma Pomme"(which means "myself" in slang), is a cheerful man, well aware that money does not make happiness and who, of all things, prices freedom. Which is why he has become a tramp and he has never regretted his choice of life. Things go smoothly until the day he inherits a huge amount of money. He first refuses it but changes his mind when he realizes that thanks to the inheritance he can help others. Even more enticing is the fact that he must share the big money with a charming air hostess. However once he deems he has done enough good he gives up the money left and resumes his old lifestyle singing along "Ma pomme c'est moi, j'suis plus heureux qu'un roi..."

The manager of a firm has a very unusual idea : asking his employees to pose as gangsters and to hold up a bank before returning the stolen money and pocketing the reward. But things do not go according to plan and the phony thieves get stolen in their turn. They have no other choice than turning into amateur detectives to be able to pay back the stolen dough.

Jacques Mervel, also known as "L'Homme de la Jamaïque" makes use of his talents as a gun runner in Tangiers, Morocco. After triumphing over a rival gang, he decides to quit the job and to start a new life with Vicky, a pretty young nurse. In Paris, a doctor lets him know that he is affected by leprosy. In desperation, Jacques runs away from Vicky to spare her. When she realizes the reason why Jacques has disappeared from her life, she joins him with a view to helping him fight the disease.

Evanella, who writes the “Horoscope” section of a major newspaper, and her brother Méristo, create with the help of a young journalist, Jean Lassère and the capital of their uncle Amédée, a “Bureau des Prédictions”. Success being expected, they manage to obtain revelations about a gang of gangsters which they publish as predictions. It is success and fortune. Jean marries the newspaper director's daughter and Evanella the director himself.

Renaud, a young student who is camping alone at the moment, has a dream one night, in which the woman of his dreams appears. When he wakes up the next morning, he cannot believe his eyes: the creature of the dream is there by the side of the road, in the flesh! The woman accepts to drive Renaud to Montargis but it is only after she has dropped him off there that he realizes that what he experienced for her was love at first sight. He then decides not to return to Paris but to try and find the wonderful stranger in Montargis. He discovers that the woman's name is Clara and that she is the member of a drama company.

Mme Beaudrier, the wife of a Parliamentary Senator, hurls a pastry at visiting King Joan IV of Cerdagne, sparking off a series of farcical events involving all levels of the government and their mistresses.