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.

Un postino coinvolto in un incidente perde tre telegrammi, uno dei quali è destinato ad un influente uomo politico, e si mette a cercarli con l'aiuto di una sveglia ragazzina e dei suoi amichetti.

Antoine (Gérard Gervais), młody posłaniec telegraficzny, podczas jego drugiej nocy pracy, dostaje trzy telegramy, z których jeden jest dla prezesa Camber of Deputies. Podekscytowany Antoine wjeżdża rowerem w ciężarówkę i gubi telegramy. Następnie rozpoczyna się zabawne i bolesne poszukiwanie zaginionych wiadomości. Najpierw pomaga mu ponura, mądra jak na swój wiek dziewczynka, Amelie (Eva Simonet); policjant po służbie, nauczyciel, cukiernik i strażak.