Biker Svyatoslav Rúsov, caught on the road by bad weather, decided to leave the highway and wait out the storm in the nearest copse. A lightning strike, a flash in the eyes—and… Rusov’s consciousness is carried back many centuries and merges with the mind of sixteen-year-old Prince Svyatoslav Igorevich of the Rurik line, the son of the famous Princess Olga. The 10th century. Slavic tribes stand on the threshold of forming a single state. But they couldn’t cross that threshold—rather than uniting against common external enemies, the tribes will begin quarrelling and fighting over petty grievances, incited by agents of the Khazar Khaganate and the Byzantine Empire. But Svyatoslav intends to change the course of history that once happened…