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!
| Actor | Role |
|---|---|
 Jean ParédèsEugène Crochard | Eugène Crochard |
 André Gabriello'Bébert La Bredouille' | 'Bébert La Bredouille' |
 Paulette DubostMrs. Motte, concierge | Mrs. Motte, concierge |
 Lili Bontemps'Youyou' | 'Youyou' |
 Frédéric DuvallèsGandois | Gandois |
 René AliéBoisgirard | Boisgirard |
| JJosée ArielNot listed | Not listed |
 Yvonne ClaudieNot listed | Not listed |
 Louis FlorenciePrétendot | Prétendot |
| MMarcelle FéryNot listed | Not listed |
| FFrance GabrielNot listed | Not listed |
| NNicole GammaOdette | Odette |
| MMaurice GilmerNot listed | Not listed |
 Léon LariveWalker | Walker |
 Charles LemontierCommissioner | Commissioner |
| CCharles MahieuVandergoote | Vandergoote |
| LLiane MarleneNot listed | Not listed |
 Marcel MelracCommissioner | Commissioner |
| RRoger MéraEmployee | Employee |
| MMichel MéryEmployee | Employee |
 Georges PaulaisSpeaker | Speaker |
| LLéon PauléonTax inspector | Tax inspector |
| MMarcel PortierNot listed | Not listed |
 Marcel PérèsBellamy | Bellamy |
 Philippe RichardCardinal | Cardinal |
| PPierre StillEmployee | Employee |
| TTitysPostman | Postman |