Story is primarily based on the adventures of Antoine, a young telegraph messenger on his second night of work. He is given three telegrams, one of which is for the president of the Camber of Deputies. Excited, Antoine runs his bicycle into a truck and loses the telegrams. What follows is an amusing and agonizing search for the missing messages. He is assisted first by a glum, wise-beyond-her-years little girl, Amelie; an off-duty police superintendent, a schoolmaster, a cookie-tin maker and a fireman. The harmonica musical theme is played by Flore Falvey.
Henri Decoin
Director
Gérard Gervais
Antoine Letourneur, the little telegraph operator

Eva Simonet
Amélie

Olivier Hussenot
The police commissioner

Christian Fourcade
A little boy

Henri Crémieux
School's director

Jacques Tarride
Mr. Grandjean

Germaine Michel
The flowergirl

Henri Marchand
Joseph, the school janitor
Flore Falvey
Harmonica Player, Theme Music
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