In 17th-century Hungary, recently widowed Countess Elisabeth Nádasdy discovers that her youthful appearance and libido can be temporarily restored if she bathes in the blood of young women. She enlists her steward and lover, Captain Dobi, to help with the kidnap and murder of countless local girls, whilst having another sexual affair with young Lt. Imre Toth. As a cover for her crimes while in her rejuvenated state, she takes the identity of her own daughter; but castle historian Fabio grows suspicious. Eventually she kills a prostitute called Ziza and it doesn't help, Dobi finds Fabio who has a chapter about blood sacrifices and tells Elisabeth the truth in return for being allowed to live, he says only a virgin sacrifice will work. She then kills more virgins. Fabio tries to tell Toth the truth about his lover, but Dobi kills him before he can. He then shows Toth Elisabeth to jade him away from her. Elisabeth forces Toth into marrying her but her daughter Ilona arrives home, Elisabeth grows old again and tries to kill her daughter but kills Toth instead. Elisabeth, Dobi, and her maid are sentenced to death for their crimes and are last seen awaiting the hangman in their cell. In the last scene a peasant curses her as "devil woman" and "Countess Dracula".