A twist of fate leaves a hapless accountant romantically torn between two sisters.

A man who works as a theater prompter and can't always tell the difference between fantasy and reality, asks a girl on a date and then writes a successful script based on said date without telling her.

Lucie, who works as a white-hot fashion model, exhibits a dominant, often controlling, "Type A" personality, whereas identical twin Marie consistently projects a backward, reserved, laconic and unassuming attitude. When Lucie receives a covetable French recording contract, a significant problem stands in her way: the inability to sing. Marie possesses the voice of an angel, however, and quickly jets off to Paris to stand in for her sister, unannounced - little realizing the dangerous and even violent string of consequences that she is igniting.

In early 1920s France, an author, lying on his deathbed, looks at various photographs and is flooded with memories of the people and events that have shaped his life.