The action of the Russian detective series "Cipher-2" takes place in the capital of the USSR in 1957. Sofia and Vershinin got married. At a party, Ira and Lesh quarreled, and Lesh went home alone. Some time later, Anya and Proskurin stumble upon the body of a man without a jacket and shoes in an alley. The murdered man turns out to be the photographer Zhenya Labukhov. Beliy is convinced that the case is solved, but Proskurin doesn't give up. After some time, it becomes known that Labukhov was producing erotic photographs.