Melun, on 1959. On the return to an auction, a young and attractive widow, Elisabeth Vernon, finds at her home(with her) a wounded escapee of prison. The fugitive, Daniel Morane, is a handsome boy and justifies himself crimes(murders) of which we accuse it. The young woman is allowed convince, seduce, feels sorry, and agrees to help him(it). But during their escape(mare), the doubt seizes her …
During the First World War, the Empyrée Montmartre, a Paris music-hall, is dedicated to patriotic revues whose star is the charming Mitsou. The young artist is not without talent but she is mainly well-connected. She is indeed the cherished mistress of Pierre Duroy-Lelong, a rich industrialist. One night, thanks to Petite-Chose, an ebullient singer-dancer and her co-star, she gets to know a handsome army, Lieutenant Bleu. Mitsou falls madly in love with him and Lieutenant Bleu is physically attracted to her. The trouble is that Bleu comes from a distinguished family and cannot put up with her lack of culture and artistic bad taste...
Tongues start to wag after a famous Parisian music hall dancer is rushed to hospital after being found poisoned by arsenic at the Concert Mayol.