Dédé de Montmartre, former king of the accordion, has become a bad boy who lives off drug trafficking and prostitution. He sets his sights on a young girl, fresh and naive, Odette, saleswoman at Galeries Lafayette. But he is touched by the charm of this midinette.
The first schemer, short of money, offers himself at a high price to facilitate the fantasies of the other, by playing the role of substitute. The second is an unscrupulous banker who sows ruin and grief but who is soon ruined and fooled in turn.
Meg decides to commit suicide to escape the marriage to which her father intends her. She is saved by Jean-Pierre, another candidate for suicide, and Léon, a tramp who was just trying to reason with him. The trio then becomes inseparable and organizes a new life based on friendship and freedom.
The tailors Moïse and Salomon Lévy decide to marry Mina, Salomon's daughter to a good match, to save themselves from the competition that Cohen makes for them. Mina will eventually succeed in marrying Pierre, from a marriage of love, without this harming the family business.
In the 13th century, lovers hurried to the door of Marguerite de Bourgogne. The aristocrat who every day was indulged in orgies that were famous throughout the country. What the suitors do not know is that they will inevitably be executed the day after these festivities and thrown to the Seine.
A wealthy old maid offers to be the godmother of a regiment in order to find a fiancé for her niece who must come into possession of a large inheritance the day she marries a private.
