Zabava, the duke's niece, is young, beautiful and in love with the young messenger Yelisey. The duke is a gambler and is in big debt with a rich merchant who wants to marry his niece. The two businessmen make a plan. The merchant hides the girl and tries to make her marry him. Meanwhile the duke tells everyone that Zabava has been kidnapped by a dragon. Dobrinya Nikitich, the local hero, is called to set out on a journey to save the girl from the dragon's clutches. Yelisey, who is the only one really worried for his beloved, will be his assistant. It will be not easy for Dobrinya and his young follower to accomplish their mission. They know nothing of the duke's secrect pact and will have to fight against an old witch allied with the merchant.