"Le Tambourin", a Montmartre nightclub, is on its way down. Although it can boast great performances by the alluring Blue-Bell Girls and by Jacques Hélian's lively Big Band the venue does not attract people anymore. Nightclub patrons now prefer the jazz cellars of Saint-Germain-des-Prés. Taking this new taste into account, the staff of the "Tambourin" and Jacques Hélian decide to set up their own club, "La Pivoine Ecarlate".