Bernard, a young, serious publisher of religious books, finds himself embroiled in amusing and eventful adventures with Sophie, a wacky twist dancer. Having lost his own situation, he joins Editions du Soleil thanks to his friend Marcel's manuscript "Comment réussir en amour". Freed of his shyness, he succeeds brilliantly in his career; and having put to good use the teachings of the manuscript, Bernard ends up marrying Sophie. But he soon finds himself confronted by the impetuous young woman's fantasies.

June 1944, a French town towards the end of the occupation. Following several attacks perpetrated by the resistance, the inhabitants who listen to English radio are rounded up by the Germans in a prison and considered as hostages. In one of the cells are found men from all walks of life: an aristocrat, the Viscount of Saint-Leu, Doctor Noblet, a resistance fighter, Béquille the wanderer with a wooden leg, and a strange character nicknamed "Black Market". The latter arouses mistrust among the prisoners, because it could well have been introduced by the enemy.

1962 French film directed by Philippe de Broca