The girl is afraid for the life of her brother, whose father does not believe in their relationship. The man is sure: his ex-wife had a son. But she claims that she was faithful and dreamed of a big family. And the 13-year-old son hopes that genetic examination will help him finally find a father.

Two brides in different cities and at different times found out a few days before the wedding that they were adopted in their families. Now they are both looking for the same woman with the surname Razvozzhaeva. What does the official son of the one they are looking for know? And who are they to each other?