The Terrible Vengeance Summary

Captain Gorobets is holding a large wedding celebration for his son. Many Cossacks are present and there is much dancing, drinking and celebrating. A sorcerer appears at the wedding but quickly disappears. The Captain's brother, Danilo, also a Cossack, and his wife Katerina and their baby leave the wedding to travel by boat down the Dnieper. Katerina fears the sorcerer may cause them harm or death. When ghosts appear in a cemetery they pass, Danilo assures Katerina there is nothing to fear.

When Danilo and Katerina return home, Danilo and Katerina's father become angered at one another and have a sword fight and then a duel with muskets. Katerina's father shoots Danilo in the arm after which they come to a truce. Katerina has a dream that he is the evil sorcerer. Danilo witnesses him turn into the sorcerer...