Detective Maks Aleksandrov of the Moscow Investigative Committee goes on the long-awaited vacation with his wife and daughter. The pleasant bustle and anticipation of the sea—though it’s still autumn—are cut short by an unpleasant discovery: in Maks’s wife’s suitcase, investigators find bloodied belongings of an unknown woman. The captain’s colleagues believe the act threatens Maks in connection with one of his past cases, but his instincts tell him that everything is far more complicated than that. The search for the unknown girl leads him to Chelyabinsk, where the evidence opens a chain of grim secrets.