988 Prince Vladimir is preparing for the great baptism of Kievan Rus. Fearing a rebellion, he locks the Magi, pagans, who are inciting the people against the Christian faith, in dungeons. Now no one will interfere with baptism. But on the day of the ritual, at the sacred moment of entering the river, the merchant Dolma dies. Fun and delight almost turn into horror and panic. Dobrynya and his neighbors manage to calm the people and continue the baptism. Enraged, Vladimir orders to find the killer of Christian Dolma. Only one person in Kyiv can do this - the sorcerer Ozar. But what does an inveterate pagan care about the death of a merchant who has renounced the faith of his ancestors? He wants to know the truth, from which even the faces of saints will fade...