Russia, 1736. The sixth year of Anna Ioannovna's reign. To strengthen the family of her female ancestors, the Miloslavskys, the Empress bequeaths the throne to the future son of her niece Anna Leopoldovna. There has never been such a thing in history that a non-existent child has become the heir. Meanwhile, for the sake of a worthy military alliance with Austria, the Empress trains Anna Leopoldovna and Anton Ulrich, Duke of Brauschweig. The mother of the future heir does not like the groom, and this is used by Peter, the offspring of Biron, and the Saxon envoy Moritz. The hunt for the princess begins between these two knights.