In 1920s Paris, a wealthy socialite named Marguerite Dumont harbors a passion for music and opera, often belting out tunes for her friends despite her lack of talent. Her husband and acquaintances have indulged her fantasy, but when she decides to take the stage in front of a real audience, her delusion is threatened.

Marguerite
The opulent setting of Marguerite Dumont's castle hosts a lavish party, where the eccentric hostess, Marguerite, takes center stage, singing off-key melodies with unbridled enthusiasm, oblivious to her vocal limitations.