1944. At a meeting in Himmler’s field headquarters, the question of the fate of the largest centers of Slavic culture was considered. A decision was made on the complete destruction of historical strongholds of Slavdom: Krakow, Prague, Warsaw, and other similar centers. Stierlitz reports to the Center about the operation being prepared. To thwart the fascists’ plans for enemy territory, a military intelligence group of three people is sent in—among them is the young son of Stierlitz, Alexander Maksimovich Isaev. The group’s tasks are to establish the methods, timing, and the persons responsible for the destruction of Krakow. But from the very beginning, the scouts are plagued by failures, and the operation itself is on the verge of falling apart…