Ksyusha is worried that Vlad hasn't called for a week. Olya tries to cheer up her friend, suggesting that something could have happened to him. The professor leaves Olya in the office so that she can cover for his wife on the phone, but Boris Alekseevich's wife comes to work for him. We find out that there was nothing between them and Olga, the girl is being reprimanded on the subject of her husband's constant infidelities.
Masha gathers her things and leaves her mother's apartment, waiting for Bill at the hotel, but he is offended by her. The girl has to return to her friends' apartment, realizes that Artyom is also offended by her, but soon her manipulations work.
Olya admits that she has fallen in love with the professor, and Ksyusha calls Vlad to put all the points in their communication. The guy talks about the operation and asks for a meeting so that he has the opportunity to explain himself to her. She agrees and goes with Vlad to the play. Vlad's mother unexpectedly joins them. Ksyusha continues to adhere to the legend that she is the daughter of diplomat Lavrov. That evening, Bill comes to reconcile with Masha, confesses his love and offers to go abroad with him. And her husband Igor comes to Ksyusha, scares her with his rude attitude again...

Twenty years later. Ksenia is a successful owner of a large clothing brand, raising two children alone and accepting the courtship of married Alexei. Olya continues to live with Boris and all his children. Masha arrives in Moscow, where Bill informs her by phone that he has filed for divorce.
The friends meet at the disco. Olya refuses to leave the dance floor, so Ksyusha asks her son Matvey to take her friend home. Masha and Masha take the subway home, where Gosha, a rock climber, meets her, claiming that he is her future husband. They get off at the station without having had time to exchange phone numbers.
Olga wakes up in Matvey's apartment, embarrassedly gets ready and goes to her family, where Boris laments about her absence from home. The next day, she asks Matvey to forget and not tell anyone about their affair. To which he claims that there was nothing between them, even though he likes her very much. Meanwhile, Gosha finds Ksyusha online and invites her on a date to the climbing wall. Then they go to Cheburechnaya, where they accidentally meet with his friends. Under the screen of Gosha's birthday, they tell Ksyusha the facts about him. Masha, after the wake of her mother, goes to Artyom. Her appearance comes as a big surprise to him.