The Prince of Kiev faces a dilemma in choosing his heir, ultimately selecting his niece Zabava, who is currently studying in Constantinople with her husband, Elisha, a loyal student of Dobryni Nikitich. However, their safety is threatened under the rule of the treacherous Vasileus. To bring Zabava back home, three brave heroes embark on a perilous journey, accompanied by Julius, the court's trusty horse. As they navigate challenges and confront dangers, the heroes strive to ensure the rightful heir returns to Kiev and secures the throne's future.