Eugène, who works for Radio-Europe, is a bit dim-witted. He lives in a block of flats whose caretaker is Madame Motte, and the lady is in love with the young man. Just for laughs, Eugène's friends circulate on the air the rumor that Eugène has inherited millions of francs. It does not take long before a swarm of 'friends' start mixing with him. After a while, considering that the joke has lasted long enough, the jokers reveal the truth. Eugène immediately loses all his 'friends' but not he girl he loves. Even better, Eugène actually inherits a big sum of money. He who laughs last laughs best!

Jean Parédès
Eugène Crochard

André Gabriello
'Bébert La Bredouille'

Paulette Dubost
Mrs. Motte, concierge

Lili Bontemps
'Youyou'

Frédéric Duvallès
Gandois
René Alié
Boisgirard
Josée Ariel

Yvonne Claudie

Louis Florencie
Prétendot
Marcelle Féry
France Gabriel
Nicole Gamma
Odette
Maurice Gilmer

Léon Larive
Walker

Charles Lemontier
Commissioner