Margarita lives a double life. In one life, she is a modest literature teacher at school, a wonderful wife and mother. In the other, she is a bright and mysterious singer at a night restaurant. The heroine performs in a mask under the pseudonym Greta and carefully hides her identity not only from the public, but also from her family: her mother, daughter Zhenya and husband Victor. However, deception plays a cruel joke on her. During one of her performances, Margo notices her husband in the audience in the arms of his mistress Vika, the daughter of his boss. She decides to follow them, but eventually finds Vika dead. Margarita realizes that all suspicions will now fall on her. In addition, the girl's influential father will not stop until he finds the killer and punishes him. This means that Margo's fate is unenviable. Together with Victor, Margo decides not to go to the police, but to hide the girl's body in the forest. So the heroine finds herself in a trap from which there seems to be no way out...