"A student from an elementary school accidentally breaks the glass roof of his school. His comrades decide to support it by working during the summer holidays in order to pay for reconstruction."
Louise Carletti
as Mariette
Gilbert Gil
as Monsieur Morin, l'instituteur
André Brunot
as Le commissaire
Marcel Pérès
as Victor Lemoine
Louis Seigner
as Le directeur de l'école
Anthony Gildès
as Le père Castor
Léonce Corne
as L'ami de la famille
Martial Rèbe
as Le père de Fernand
Madeleine Geoffroy
as La mère de Fernand
Jeanne Pérez
as La mère de Jeannot
Henry Darbray
as Le client radin
François Viguier
as Le mendiant
Émile Genevois
as Gros Charles
Lucien Coëdel
as Le père de Jeannot
Robert Arpin
as Gégène
Serge Bedez
as Un gamin
Jean Buquet
as Tom Mix
Jean-Marie Boyer
as Lucien Collard
Liliane Barnassin
as Une gamine
Bernard Daydé
as Doudou
Jean-Pierre Geffroy
as Pierrot Roset
Henri Legoullon
as Fernand
André Lancel
as Jeannot
Jean Samson
as Robert
Raymond Bussières
as Gaston
Pierre Larquey
as Le père Finot
Antonin Baryel
as Le camelot bègue (uncredited)
Gérard Cadiex
as (uncredited)
Geneviève Cadix
as Mélie, une gamine (uncredited)
Jean Chambon
Jean Clarieux
as Un agent (uncredited)
Michel Dancourt
as Nicolas Lemoine (uncredited)
Joé Davray
Liane Daydé
as Une gamine (uncredited)
Paul Frankeur
as Le secrétaire du commissaire (uncredited)
Henri Geoffroy
Lucy Kieffer
as Mme Lemoine (uncredited)
Franck Maurice
Jane Pierson
Bernard Pottier
as Henri (uncredited)
Serge Redez
as Soulier (uncredited)
Georges Régnier
as Andre (uncredited)
Marcelle Suire
as Georgette (uncredited)
Renée Thorel
as La dame charitable (uncredited)
André Zibral
as Le professeur grincheux (uncredited)
Louis Daquin
Director
Writer
Suzanne de Troeye
Editor
Maurice Hiléro
Screenplay
Jean Bachelet
Director of Photography
Gaston Modot
Erich Kästner
Novel
Marcel Aymé