Jean is ten years old and imagines that he is the cause of the misunderstanding that occurred between his parents. He leaves the military institute where he studies and becomes the protégé of an opera singer at whose house, one day, he surprises a thief who blesses him. His parents reconcile at the foot of his hospital bed.

Constant Rémy
Commandant Robert Vernot
Ninon Vallin
Claude Arbellin

Jeanne Boitel
Denise Vernot
Gabriel Farguette
Le petit Jean

Raymond Aimos
Belette, le moniteur de l'école (as Aimos)

Jean Dax
Le colonel
Jean Bara
Le petit Pierre

Gaston Modot
Raymond

Léon Bary
Denys

Camille Bert

Jean Buquet
Doumel
André Fouché
Tony Murcie

Robert Ozanne