The book tells about the fate of the “illegal immigrant from Königsberg” - a Soviet military intelligence officer who worked under the operational pseudonym “Lun”, his military comrade-in-arms - photojournalist Sergei Lobov, their friends and relatives, scorched by the merciless flame of the Great War. And the counterintelligence officers - the heroes of the story “The Sign of Vishnu” - enter into a deadly battle with a detachment of “werewolves” terrorists left by the Nazis in the small town of Althafen, located on the shores of the Baltic Sea...