The protagonist of the series "Nina" is an ordinary Russian woman, a mother of many children, who not only carries the entire household on her shoulders but also manages to help all her numerous ex-husbands. After the betrayal of her third spouse, Nina decides to completely change her life. Taking her three children with her, she moves from a cozy country house to a small Khrushchevka apartment. Along with her, her second husband, who is used to living off her, gets involved. Additionally, Nina's first husband, a semi-mad professor, tries to come back into her life.