It was shot at the Joinville Studios in Paris, with sets designed by the art directors Lazare Meerson and Alexandre Trauner.

Zouzou and Jean are presented in the Cirque Romarin, a traveling circus, as 10-year-old twins: she's dark, he's light.

Zouzou entertains them by imitating the temperamental star, Barbara, who has little talent but all the support of her “gigolo”, M. de Saint-Lévy, who is a silent partner in the music hall.

Zouzou and Claire deliver laundry to the music hall and go dancing with Jean that night.

Trompe despairs, believing the show will flop, and the chorus girls persuade Zouzou to try on a costume (she looks beautiful).

Over Josette's objections, she rushes to the police station to identify him incontrovertibly by the finger missing on his right hand, then gives her statement.

She returns and performs the song about an unfaithful lover, “There is only one man in Paris for me...” that Barbara sang so badly earlier in the film.

Jean is released from jail, and Zouzou watches his reunion with Claire from a distance.