Beloved Kostya and Masha decide to get married. But immediately there are problems with relatives. Kostya's father is a retired military man, a strong—willed Russian man who plans to rent an Officer's House for a family celebration, invite all relatives up to the fifth generation and celebrate according to the traditions of the Russian feast.
Fate played a strange joke with Airborne Forces officer Vladimir Mendin (call sign "Mendel"): his whole life is spent among women. Three daughters took over his house a long time ago, and there was almost no room for vests on the hanger between the dresses. One day, Mendel's life becomes even more "pink" when, according to the will of the deceased general, he gets a successful wedding salon, which is run by Lena Zhukova, a confirmed bachelor. And that would be all right, except that the general's widow and her new boyfriend seriously decided to take away the salon.
People who are very different in social origin, material capabilities, occupation and outlook on life are involved in a curious situation. Wealthy businessman Igor and his girlfriend Olga - a socialite who dreams of a career as a designer; tired from work as a physiotherapist Andrey and his wife, a pharmacist, Irina. The thrill seeking in one case and the desire to find a way out of the family dead end in the other lead these couples to a New Year's Eve swinger party. A sexual experiment in both couples, initiated by only one of the partners, turns into a series of incidents and ends in failure. To the surprise of themselves and their "legitimate" halves, the heroes reveal real feelings and strong mutual affection.