Prima-ballerina Elena Knyazeva prepares for her performance on the anniversary jubilee for the theater Swan Lake on the eve of her fiftieth birthday and simultaneously participates in the production of the innovative ballet Master and Margarita. Suddenly, the choreographer gives the role of a young ballerina, with whom he begins an affair. Overcoming jealousy and desperation, Knyazeva begins to work with the student over the image of Margarita