Crises happen in any relationship. The most romantic day of the year has prepared serious challenges for the heroes. Will they find the strength to cope? Or will they be scared and disperse? The film is about the fact that true love is able to conquer everything, even if Cupid's arrow accidentally hit the wrong place.

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.

This story began back in 1986. Perestroika was already underway, but the Soviet Union had not yet collapsed. It was a time when there was no Internet, hypermarkets and even mobile phones, but they drank water from the tap, there were no traffic jams in Moscow, and the keys to the apartment were quietly left under the rug.

When a mysterious plague hits Moscow, a group of survivors flees to the wilderness, threatened by the sickness, looters — and their own bad blood.