Three happy reservists are doing a military period. One evening out and about, thinking they were going back to the barracks, they enter a boarding school for young girls. They exchange their uniforms for the dresses of three teachers, which launches them into a series of incredible adventures for a few days.

Pierre Larquey
Félicien, pharmacist

Yvette Lebon
Monique

Roland Toutain
Jacques Dancourt

Raymond Cordy
Mr. Plume, pork butcher

Marguerite Pierry
Director
Paul Asselin
Captain

Léonce Corne
Adjutant

Jeanne Fusier-Gir
Désirée, teacher
Madeleine Gérôme
Alice

Denise Grey
Hortense, second teacher

Odette Joyeux
Micheline
Jane Loury
Third teacher

Jacques Louvigny
Gardener

Armand Lurville
General

Pedro Elviro
Photographer