The natives of the Sverdlovsk region, who are unfamiliar with each other, want to know their biological relatives. Natalia found out that her adoptive parents gave her the name, and at birth her name was Dasha. Another Natalia's foster mother told her that she was Elena and she had an older brother. Vasily grew up in an orphanage and knows for sure that he never had sisters. What if they were born by a single mother who distributed children to everyone?