Moscow, 1952, mid-October, the XIX Congress of the CPSU had just ended. A communal apartment on Bolshaya Pirogovka. In one of the rooms lives the Petkevich family: Ariadna with her husband Boris and her parents, professor of philosophy Peter Kazimirovich and his wife Angelina Fyodorovna. For those few months that remained until Stalin's death, the family experiences a series of dramatic events. But on a background of terrible time, antisemitism, fabricated "case of doctors", denunciations and snitches, there are people who live their lives without losing dignity.
Twenty-year-old Elya is a student and a future ecologist. One day, Matvey, the head of a construction company, comes to her university to talk about a development plan on the site of an old forest park. Elya does not hesitate to smash his project to smithereens. Matvey is intrigued by the girl's self-confidence and uses his usual methods of influence - he simply tries to "buy" her. But Elya doesn't need a sponsor. Then Matvey, surprised by her impregnability, offers Elya a bet: seven romantic days according to his rules. If after that the girl still decides to leave, he will refuse to build a skyscraper in the forest park. She agrees when Matvey really suspends the design work. Elya sees herself as something like the heroine of the film Pretty Woman, but Matvey turns out to be not at all the person she imagined.