The Winter (Soviet-Finnish) War is underway. By the will of fate and circumstances, state security captain Shepelev and his task force find themselves in the front line. In the silence of forests and snow, among abandoned and inhabited Finnish farms, near the location of Red Army units and on the approaches to the Mannerheim Line, enemy spies and saboteurs operate: Finnish, Swedish, German. State Security Captain Shepelev and his task force enter into the fight against spies and saboteurs ..The book is recommended for reading by people over 16 years old.