Zhenya and Boris are going through a vicious divorce marked by resentment, frustration and recriminations. Already embarking on new lives, each with a new partner, they are impatient to start again, to turn the page – even if it means threatening to abandon their 12-year-old son Alyosha. Until, after witnessing one of their fights, Alyosha disappears.

In a Russian coastal town, Kolya is forced to fight the corrupt mayor when he is told that his house will be demolished. He recruits a lawyer friend to help, but the man's arrival brings further misfortune for Kolya and his family.

Three brothers come to the parental home to visit their old mother, who is dying. In the oven, they find a charred document on the adoption of a boy, on which the name and year of birth of the child cannot be read. Now, based on scraps of childhood memories, you need to reconstruct the events and figure out who is the adopted son.