The Lord of Okazaki is killed by his brother-in-law. Although the Lord's widow bears a child, she is also killed. Then, a ghost cat begins stalking in the castle.
Okoyo, the mistress of Lord Arima, fears that she is being replaced by a younger woman named Otaki. In a fit of jealousy, she kills the younger girl. The dead woman's cat licks her blood and becomes a demon, seeking revenge on Okoyo
