Naive and good-hearted Léon Ménard arrives in Paris, determined to find work in the capital. In a café, he meets Bob, a seedy guy, who helps him to get a job. On cloud nine, the ingenuous young man, does is unaware of how Bob manipulates him. Having become the night concierge of a hotel, the thankful Léon lets Bob and his accomplices get into the pace. Jewels are stolen as a result.When he is accused, Leon refuses to incriminate his "friend". Fortunately, Charlotte, Léon's fiancé, manages to find evidence of Bob's guilt and thanks to a premium paid by the diamond dealer the two lovebirds can buy a grocer's shop and tie the knot.
Bourvil
as Léon Ménard
Paulette Dubost
as Charlotte Béloiseau
Robert Berri
as Bob
Mona Goya
as Suzy Rexy
Pauline Carton
as Madame Potinel
Frédéric O'Brady
as Van Golden
Louis Florencie
as Monsieur Martin
Charles Bouillaud
as Inspector Robillard
Jean Diéner
as President of the Court
Paul Faivre
as Paul aka Popaul
Marcel Meral
as Hotel concierge
Harry-Max
as Investigating judge
