To save his classmate Lisa, the fragile, dreamy Lesha commits a crime - he steals her mother’s talisman, a brooch in the shape of a dragonfly, in order to sell it and buy Lisa a ticket to her mother, who married abroad, after which Lisa stopped growing altogether. Lesha goes through all the torments of punishment, changes, and as a result, both he and all his friends who participated in Operation Mukhadrakon have their most cherished dreams come true.
Character-driven crimedy story. The main characters of the series are the modern musketeers past their prime: crime kingpin from the 90s Garin, honest investigator Shavyrin, former police colonel Tarasov, and a famous writer Nezabudkin delusional about his detective skills. The story starts in a private medical center with Shavyrin diagnosed with a lethal disease. On weighing up all the pros and cons, he decides to end his life only to be interrupted by a doorbell. It’s his daughter Nastya who came from Moscow to Petersburg to start her career as an investigator. There, she makes an acquaintance with Nikita, a young officer from the Criminal investigations department. She doesn’t know, though, that her new friend is the son of the legendary colonel Tarasov, who’s doing his time in jail. Once he’s finally outside, Tarasov plans on killing Garin, who he deems guilty of his imprisonment. Nastya and Nikita learn about Tarasov’s plans and try to stop him while investigating other cases.
In Petersburg during perestroika there are two people, Alya and Nika. She is a little funny Petersburg intellectual; he is a French architect. They cannot live without each other, but they cannot together, either in the ancient Lyon castle, or in her communal apartment inhabited by colorful neighbors. Next to Alya is her childhood friend - Mitya, whose love she does not notice. He uses Ali's ridiculous mistake and Niki's jealousy to separate them for years.