Almost a quarter of a century ago, in the mountains of Afghanistan, Sergeant Gorchilin’s squad withstood a fierce battle against superior forces of dushmans. Not everyone survived that meat grinder, and those who survived tried to remember these events as rarely as possible. But the past itself reminded itself... Already in our days, someone methodically and mercilessly began to kill former soldiers who participated in that battle. For what? Who needs this and why? Even expert analyst Drongo cannot find the answers to these questions; for now he is only trying to get ahead of the killer and save the surviving soldiers. But the inventive and skillful killer does not intend to retreat, each time one step ahead of the famous expert...