The Prince of Kiev has decided to appoint an heir to the throne, but what a headache: who can it be? A relative, a friend of the family or perhaps the princess from beyond the sea? Without further thinking, the prince almost chooses the princess, who, importantly, is also a relative: his niece Zabava (having fun). At the moment she and her husband Elissiey (remember the faithful disciple of Dobrynia Nikitich) are following a teaching in the distant Tsargrad led by the cruel Vasilyevs. To send the heiress back to the native lands, three knights and, of course, the best horse of the court, Yuli.