The Kiev governor Mistina, entering into a row with the Plesnetsk prince Eton, was sure that he would leave the lands as an inheritance to the son of Princess Olga, the growing Svyatoslav. This is the deal! However, the crafty old man, to whom the supreme god Odin gave three terms of human life, decided to outwit the evil fate that had never given him his own children. Having adopted a forest foundling, Eton made him his secret weapon. But the old prince failed to calculate all the consequences... And now not only his rivals, but also himself and his beautiful young wife, walking on the edge of death, will have to go through many exciting tests...