A rich sugar factory manager wants to marry his daughter to an aristocrat, while the young girl is in love with an engineer, employed in a rival company.

On one side, a crooked banker, his nephew and his orderly; on the other, the honest friend of the banker and his daughter. Substitution of male and female characters that end with two marriages.

The maid and the driver of Sidonie de Valpurgis have the absurd idea of ​​subletting the hotel of their boss during her absence, and precisely to Sidonie's ex-friend, who wants to spend his wedding night there.

Lord Samsey murders his uncle in order to get rich. His sister's boyfriend vows to find who the murderer is so he can clear his wrongly accused father.