The TV series "The Room of Antique Keys" is a Russian detective story based on Elena Mikhalkova's novel about private detectives Makar Ilyushin and Sergey Babkin. In an elite suburban village near Moscow, lives the renowned psychologist Anzhey Kovalsky, who finds keys to his clients' problems - quite literally. He collects antique keys and then gives them to the sick, so they can escape the traps of their own minds. But one day, the master of psychology finds himself in a hopeless situation...