Jacques Demy directed this frothy tribute to the Hollywood musicals of the 1940s, a follow-up to his earlier success The Umbrellas of Cherbourg (1964). Twin sisters Delphine and Solange (played by real-life sisters Catherine Deneuve and Françoise Dorleac) live in the small coastal town of Rochefort, where they run a school teaching dancing and music. Both feel frustrated in Rochefort, and they dream of travelling to Paris, where they believe romance and opportunity awaits them. Meanwhile, their single mother, Yvonne (Danielle Darrieux), who runs a cafe in town, pines for her lost love, Simon (Michel Piccoli). One day, one of Yvonne's regular customers, a sailor with an artistic bent named Maxence (Jacques Perrin), shows her a painting of the imaginary girl of his dreams, and she looks just like Delphine, whom he's never met. Meanwhile, Simon has returned to Rochefort, bringing with him a close friend, American pianist Andy Miller (Gene Kelly); Simon has made friends with Solange and introduces her to Andy, who immediately falls in love with her. Sadly, Les Demoiselles de Rochefort was Françoise Dorleac's last film; she died in an auto accident shortly after completing the picture.
by Mark Deming synopsis