Now that they have inherited a huge sum of money Moïse Lévy and his brother Salomon are the prosperous owners of a a department store, the Galeries Lévy & Cie. Life is sweet but unexpectedly sours the day a fake Lévy cousin gets into their lives, claiming that the business is his, not theirs.
A young husband, annoyed by his stepmother, divorces and marries a young girl whose father is a widower. When the two new spouses return from their honeymoon, the stepfather has married his son-in-law's first wife.