Ancient Russia at the end of the 10th century . The marches of princes Oleg the Great, Igor and Svyatoslav the Great showed the whole world the military power of the state of Russia. Now clouds are gathering over the country, because the enemies of Russia know how to fight not only by force, but also by cunning. If it is not possible to conquer a country where almost everyone knows from which side to grab the sword, then you can be entangled in a web of intrigues, make the rulers voluntarily bow their heads. And at this difficult time, our contemporary falls into the body of the Varangian prince .. Will he be able to survive in a world that has become real from the past? Will he be able to change the course of history known to him from books by rewriting it again?