Alice Dax, daughter of a bourgeois from Lyon, left her family to go to Paris. She became Célia, a regular in the bars of Montmartre, and lives on the generosity of her lovers. One day, she meets Lieutenant Peyrac, who decides to take her with him to Toulon. There, Célia enters the middle of the "little allies", responsible for entertaining and comforting the naval officers on leave. But her affair with Peyrac did not last long and her new condition did not satisfy her. His meeting with Doctor Raboeuf will change everything.