The future. To combat global epidemics raging across the planet, an all-powerful Sanitary Service has been created. It contains the spread of terrifying viruses and pathogens of fatal diseases. And when the world is struck by a mysterious epidemic of suicides—silly, brutal ones—the Sanitary Service tries to localize the outbreak of an unknown disease. A functionary of the Service, Mikhail Malakhov, who leads the search for the causes, digs down to the truth—and that makes him an outcast, pursued fiercely by his former colleagues; the truth is too unbelievable and must not be made public under any circumstances.