Biker Svyatoslav Rusov, caught in bad weather on the way, decided to leave the highway and wait out the thunderstorm in a nearby forest. A lightning strike, a flash in the eyes and... Rusov’s consciousness is transported many centuries ago and merges with the consciousness of the sixteen-year-old Prince Svyatoslav Igorevich from the Rurik family, the son of the famous Princess Olga. 10th century. Slavic tribes are on the verge of forming a single state. But they are not destined to cross this threshold - instead of uniting against common external enemies, the tribes will begin to quarrel and feud over petty grievances, incited by agents of the Khazar Khaganate and the Byzantine Empire. Will the young prince be able to create a powerful state and repel his insolent neighbors? Will Svyatoslav be able to defeat the Khazars, Romans, Vikings and Pechenegs, using only his ingenuity and the courage of Russian soldiers?