Historical adventure novel with elements of mysticism from the recognized master of this genre Sergei Alekseev. In Russia at the beginning of the 18th century, Yakov Bruce, one of the most mysterious historical figures of Romanov Russia, operates. He fulfills the instructions of Peter I to establish contact with the semi-mythical northern tribe of the Yugagirs - the descendants of the masters of the Arctic, an ancient people with a complicated history. Bruce equips an expedition that brings the Yugagir prince a bride from a Moscow boyar family. In response, the Yugagirs must transfer their ancient calendar, containing knowledge about the future, to the Romanov dynasty. But the head of the expedition, Peter’s favorite captain Golovin, himself falls in love with the bride of the Yugagir prince... Readers are waiting for an exciting plot and interesting finds - pearls of esoteric knowledge hidden between the lines.