About the book: 2020 / The famous businessman Kudashkin addressed Colonel of the Ministry of Internal Affairs Gurov. His daughter Irina unexpectedly fell into a coma right at a party in one of the nightclubs. Doctors find it difficult to determine what happened to the girl. Detectives Gurov and Kryachko suspect that Irina took some unknown drug. They are trying to figure out the suppliers of the new potion, but the criminal network is well hidden. The case seems hopeless until, as a result of a strange combination of circumstances, operatives get on the trail of a suspicious underground society…