November 1982. The wedding anniversary of the Smelyansky couple is overshadowed by the death of Leonid Brezhnev. The new secretary general is a big stress for people who have something to lose. And the Smelyanskys and their guests are just one of these - the real nomenklatura elite. But this is not the worst thing. In the evening, their thirteen-year-old son Seryozha and their friend’s daughter Alena went to the cinema and did not return... After a call “from the very top,” police major Viktor Gordeev is involved in the search for the missing children. His transfer to the position of deputy head of the “homicide” department depends on a quick and, most importantly, positive result. But what guarantees can there be? What if they are already dead? Moreover, there is a maniac operating in the country who kills teenagers aged 13–16. And Gordeev’s friend, criminal investigation officer Leonid Cheremenin, assumes the worst. However, his adopted daughter, a recent graduate of the law faculty of Moscow State University Nastya Kamenskaya, has a different opinion: the missing children do not fit into the handwriting of a serial killer. Opera begins to work out all possible versions. And then KGB officers join the investigation...