Émile Durand, an insecticide manufacturer, is appalled to learn that his son Gérard has fallen in love with Suzy, the daughter of a travelling theatre company. Realising his father will never favour the union, Gérard joins the company on their next tour. In an attempt to heal the rift, Durand’s wife goes after Gérard and ends up performing in their next play…

The old Valmorin died 200 years ago. The notary tells the family about the inheritance: the one who is terminally ill will receive the money. They all try their luck with getting ill before the other so one family member pretends to be deaf, another pretends to have a terrible back ache and so on...