Genetic examination has already proved that the mother gave birth to an illegitimate daughter Anastasia from a neighbor, which means his official son Roman is her brother. However, the man himself doubts the relationship, as he believes that he was replaced in the maternity hospital. 32-year-old Sergei, whose mother gave birth at the same time and in the same maternity hospital with Roman's mother, agrees with him. Is the brother that the woman has just found not her brother at all? And all because children were replaced in the Kuytun maternity hospital of the Irkutsk region.