In Paris in 1314, the knight Jean Buridan is in love with Mirtille but the young woman is already coveted by the king's brother.

A viscount is ruined and wants to commit suicide. A young noceur pursued by his creditors is to inherit 60 million on condition that he marries a widow. The latter proposes to the former to do him the favor of marrying his mistress before committing suicide in order to fulfill the conditions of the will, while marrying the woman he likes. But once married, the viscount regains a taste for life. Everything will work out in everyone's best interests.

An aristocrat short of the readies, Gontran, is to marry a wealthy girl of common birth; but he has to get rid of his lover.

The Marquise de Saint-Ange wants to marry her niece Nicole, but the young girl, put off by the chosen suitor, flees with her friend Jacques.

A group of inhabitants from Ferté-sous-Jouarre decide to spend their jackpot on a three day trip to Paris.

The Baroness de Courtebise presides over an association of mothers-in-law with grievances against their sons-in-law. Armed with her prerogatives, she forbids the marriage of her daughter-in-law to the mayor's nephew, especially as an inheritance is in doubt. The ladies kidnap, the men kidnap, the election campaign turns sour and the Baroness must capitulate. She takes revenge by falling into the mayor's arms.