When a naive policeman falls in love with a prostitute, he doesn’t want her seeing other men and creates an alter ego who’s to be her only customer.

Parisian nightclub owner Simone Pistache is known for her performances of the can-can, which attracts the ire of the self-righteous Judge Philipe Forrestier. He hatches a plot to photograph her in the act but ends up falling for her — much to the chagrin of her boyfriend, lawyer François Durnais.