A man is ready to prove to the whole country that he cannot have children, and his wife gave birth to a trucker lover 17 years ago. In response, the man's wife demands alimony and assures: she gave birth to a son from him. And while adults cannot agree, the 17-year-old boy himself asked his father for a genetic examination. Does the young man have to look for his biological father all over Russia?

The mother asked her adult son for a DNA test, because she is sure that he is not her native. Allegedly, 38 years ago, she took someone else's baby out of the hospital, and now she decided to find her blood child. The son is already an adult and believes that in this way the mother is only trying to hide the betrayal. But the woman's daughter believes her, because she is constantly confused with some girl who looks like her like two drops of water. So, Mom gave birth to a girl, and brought a boy home. What happened 38 years ago — substitution, treason, or mother and son doubted their relationship in vain?