As a result of an accident, a resident of Tarasov, Elena Solomko, dies. A woman was washing windows when she tripped and fell from a five-story building. On the same day, shortly before Elena’s death, the daughter of the deceased, Victoria, comes to private detective Tatyana Ivanova and asks to help her eliminate a recently emerging symptom in the form of a voice sounding in her head and persuading her to commit suicide. At first Tatyana refuses Victoria. But having learned about the circumstances of her mother’s death, she decides to get to the bottom of the truth at all costs...