In the midst of celebrating Tatiana's anniversary, her ex-husband Victor appears on her doorstep, who suddenly disappeared from her life 25 years ago and left her with three young children. Tatiana is furious, her children (Igor, Yura and Masha) are at a loss, all their lives they believed that their father was an intelligence officer killed by the CIA.

The whole family gathered at Victor's house, who, despite the tense situation, is trying to establish relations in his usual sarcastic manner.

Tatiana still hasn't forgiven Victor, but she didn't refuse the certificate to an expensive fitness club. At the fitness club, she meets Victor's neighbor Lydia, who invites herself to visit them. The party ends with Victor's anaphylactic shock.