Héléna Bourdelle, a.k.a. "La Bourdelle," is a great singer and wife of maestro André Bourdelle. Joining the Resistance, he is killed by the accidental explosion of a grenade. Following the defeat, the family's mansion is taken over by German forces, leaving the family occupying a few back rooms, and complaining to the Kommandantur about his excesses and those of his men. Madame Bourdelle, her daughters and their tenant help by chance the escape an English airman, and are then forced to hide him in their cellar. The family, whose former caretaker Ramirez has become a Gestapo agent, is favoured by the General Spontz who has a soft spot for Bernadette Bourdelle. He is willing to ignore the fact that Guy-Hubert, son of the family, a seemingly cowardly and effeminate hairdresser, is actually the elusive vigilante known as "Super-Resistant".