Seventeen-year-old Polina left her family following her beloved. And no matter how much her parents asked her to come back, change her mind, and do everything humanely, the girl was adamant. But love suddenly collapsed. Why did they stop loving Polina? What did she do wrong? A wise woman once answered these questions: “Are you decent? A girl on a train meets someone unknown and goes to live with him. What decent family would allow this?” Polina decides from this day on to live decently and correctly. Therefore, she brings up her hard-won daughter Vera in strictness, not even allowing her to breathe freely. But the air of her home is heavy, like a high-security prison. And sometimes you have to leave to come back.