Emotionless investigator Aleksey Platov partners with Lieutenant Polina Lavrova after uncovering a murdered businessman's ties to corrupt local authorities. Their partnership tackles a complex case while facing personal obstacles.

Due to a childhood head injury, Investigative Committee investigator Aleksey Platov is unable to experience feelings. He grew up calm, reasonable and lonely. It would seem that this is an advantage in his work, but the absence of any emotions does not give him the opportunity to build normal relationships with colleagues and superiors. One day, Platov goes to businessman Eller to get dirt on influential people in the city and his colleagues from the Investigative Committee, but finds him in a pool of blood, having clearly died a violent death. One of the police officers who arrived on call turns out to be Lieutenant Polina Lavrova. From that moment on, she, together with the emotionless Platov, begins to fight corruption in the local Investigative Committee and the police.