The central character is a woman who leads a double life. She teaches literature at a school and takes care of her family. But under the cover of night, she works as a singer in a restaurant. For her performances, the heroine wears a mask. The visitors know her by the name Greta. Her husband Vitya, daughter Zhenya, and mother have no idea what Margarita does in her free time. The life of the main character changes when she sees her husband in the restaurant with another woman. Margot decides to start spying on them. What she sees shocks her...