Jean Bonnefoy, who has a talent for singing, is unemployed. So he is very happy the day he is offered a post as a music teacher in a college for young women. But he soon realizes the job is only a mixed blessing as a group of girls have set about making life tough for him. Among them is Anny Laforcade, a student who finally changes sides, taking pity on her teacher and falling in love with him. At one point, Jean meets Zébulon, a talent agent who decides to launch his singing career. Zébulon has a far-fetched idea: He asks Anny to disappear for a few days thus making people believe that she has committed suicide out of love for Jean. The latter, who is not aware of the scheme, is devastated.

In 1939, the "Union des Jeunes Filles de France", a French communist movement, sponsored this documentary short constituting a tour de France of farms, factories and workshop where young women work, thus taking charge of their own destiny.