Police Major Anastasia Kamenskaya is an analyst at the Moscow Criminal Investigation Department, one of the best operas at 38 Petrovka Street. She takes on seemingly unsolvable cases and is able to figure out the most confusing circumstances. For her, each investigation is not only a challenge to the intellect, but also an immersion into complex human feelings and relationships. By uncovering intricate and mysterious murders, Kamenskaya will certainly get to the truth, no matter what it threatens her.