In Russia, the terror of the Socialist Revolutionary Combat Organization, headed by secret police agent Azef, who is playing a double game, is gaining strength. Azef’s actions are opposed by Pavel Putilovsky’s group. A young journalist and sensation hunter, Vershinin, steals lists of members of the Combat Organization from the site of an explosion of a clandestine dynamite laboratory. The hunt for lists begins. Putilovsky recruits Vershinin to become his agent under the nickname “Nelson”. But Azef is also interested in such an informant. “Nelson” is playing a double game with excitement, anticipating new sensations...