Pyotr I is one of the key figures in world history. His indomitable energy, clear mind, incredible persistence, hard work and strict principled character allowed him to completely change the social structure of the Russian Empire. His path was thorny - he was faced not only with victories and success, but also with defeats, disappointments, mistakes and betrayal of those closest to him.

Young professor Anton Kosmich studies the history of Belarus. One day he is mystically transported to the Middle Ages, where he will have to unravel the secrets of the past millennia.