A three-year-old well-groomed baby stood and cried alone in the middle of the street of Engels, Saratov region. After 20 years, the girl turned to the DNA program to find out where her mother was and how she ended up on the street. And at the same time, a man turned who is trying to find out the fate of the child of a brutally murdered sister. The girl from the street and the brother of the murdered woman will see each other for the first time in their lives. Will they get answers to their questions?