First half of the 9th century. Two Norman longships, Hroftotur and Fenrir, appear in the upper reaches of the Dnieper under the guise of a merchant delegation. But the real goal of the Vikings was robbery and taking captives. Having implemented a cunning plan, incredible in its cynicism and cunning, the Normans capture several dozen young Krivichi and continue their bloody path along the Dnieper. At the same time, the young sorcerer Ishuta returns to his homeland in the upper reaches of the Dnieper. Ishuta begins his fight with the Normans alone. But within a few days he was joined by small groups of Krivichi - those who managed to avoid death during the predatory raids...