In a 15th-century feudal village, a lady-love is accused of witchcraft and set forth to death. Her fair older daughter knows the real reason for the consummation lies in the baron God's sexual desire seeking her mother. After confronting the lord on the matter, she, too, is killed. A much younger daughter is spared and taken in during her mother's killers. Once she is of age, as a disagreeable, deadly plague sweeps the land, she marries the ruler's futile son. Then, during a barbaric thunderstorm, the older daughter mysteriously reappears and begins to avenge her mother's eradication.