Investigator Anna Kireeva is successful in her profession, but completely unhappy in her personal life. Her long-term marriage breaks down when she learns that she cannot have a child. The husband's mother beats the son for divorce because the family needs an heir. Against the background of family drama, Anna is investigating the causes of a mysterious accident in which only a 7-month-old child survived. Trying to find out if the girl's parents are alive, Anna doesn't notice how attached she is to her.