An ambitious professor of psychiatry, Viktor Meshchersky, conducts a dangerous psychological experiment in which, under false pretenses, he locks victims and their abusers in the basement, hiding his true goals. The subsequent investigation will reveal the real motives of the professor, and will tie together the confusing stories of all participants in the cruel experiment.
Single mother Maria lives with her son and daughter in a science city, which is being prepared for liquidation. She believes that her physicist husband, who disappeared six years ago during a scientific experiment, is somewhere nearby — just in another dimension. A former colleague of her husband arrives in the city in search of the missing person's records, and Maria has a boyfriend-trucker Stas, ready to take her away with her children and start a new life together. Faced with a choice, a woman can not decide to leave her invisible husband.
Ira is a wayward 30―year-old Muscovite who does not recognize the rules and principles of modern society. Throughout the season, she easily breaks the fourth wall and openly discusses with the viewer everything that worries her. Topics for reflection and self-reflection are completely different: from mortgages and a night run to the refrigerator to cleaning an apartment and the impact of female pads on the seal population. And the seals would be fine. Ira's personal life is not all right either. She is dating hysterical screenwriter Sergei, but the explosive nature of the woman does not allow them to be together all the time, so the couple regularly quarrels.
Every Saturday fireman Anton Kalashnikov welcomes his 14-year-old daughter Kira from the dance. TV, dumplings for dinner - a standard set of entertainment from a Saturday dad for a teenage girl. But on this day, everything went wrong. Kira rings the intercom, Kalashnikov opens the front door, but the girl does not go up to the apartment. Anton has to ask for help from his neighbors in a concrete box, breaking through human indifference and past grievances.