Second world war. In one of the German intelligence schools are preparing sabotage groups of Russian prisoners of war for casting in the USSR. Among them — Nikolai Verezhnikov, who, not being a professional scout, was able to impose their own game and interfere with the plans of the enemy…
Lida Baburova, a tour guide of an architectural museum, unexpectedly receives a warrant for a two-room apartment in the new district of Zarechye, among the new settlers called "our Cheryomushki". Lida and her father go to inspect the apartment, but it turns out that it doesn't exist. The manager of the house, Barabashkin, conducted fictitious documentation, and the Baburovs' apartment merged with the neighboring one, owned by the head of the construction trust Drebednyov.
Anatoli Kuzmich retired and received a separate apartment in a new house. He and his wife are happy and make bright plans for the future: how they will go to theaters, museums, read their favorite books. But their daughter Lyusya suddenly gets married. Not wanting to part with her, Korolyovs persuade the young spouses to live with them in a new apartment. Soon a child is born, and gradually life together becomes unbearable...