A middle-aged woman, Olena, is an investigator in the district center, and her ex-husband is the head of the district police department. They divorced after Elena found her husband in the arms of another woman. Parting was not easy, betrayal hurts. The relationship between the ex-husband and wife is quite tense, infrequent, but sometimes necessary. Now Elena is raising her daughter Vika on her own.

After entering the university, the girl has to move to the city center and settle in a dormitory. Olena finds out that she is a serial maniac in the town, so she decides to go with her daughter, see how she gets along, and only then return home. However, everything is not going according to plan. The short-term trip ends with Olena being transferred to the district center, as far away from her ex-husband as possible.

The woman is determined to succeed. Using knowledge in the field of psychology, she successfully investigates cases. Thanks to hard work and high professionalism, she deserves the respect of new colleagues. However, there were intrigues in both work and personal relationships.