Psychologist Inga starts criminal profiling after her patients' deaths and fiancé's disappearance. She teams up with Major Oleg to catch the stalker who murdered them, and as they investigate, a romantic relationship blossoms between them.

A story of psychologist Inga Stefan, who, after mysterious deaths of a couple of her patients and the disappearance of her fiance, starts working in the field of criminal profiling. Along with her own investigation, Inga cooperates with the police homicide division. As the plot develops, Inga finds out that a maniac, who murdered her patients and fiance, has followed her for many years. Inga learns more details about the stalker what makes him happy as he craves for her attention, company, and understanding. While investigating crimes, Inga tries to put herself in the murderer's skin. She constantly asks questions about the murderer's personality, motives, and possible location. At the same time, Inga starts working with the homicide team. Together with Major Oleg Mischenko, the division chief, they go all the way from antipathy and never-ending conflicts to partnership, friendship, liking and, finally, love.