While on a pilgrimage, young monk Sōchō sees a waterfall turn blood-red, a sight villagers fear is the curse of a woman who drowned herself years ago. Ignoring their warnings, he ventures into the haunted Tenbu Pass to find a missing medicine seller. There, he encounters a stunning woman in a remote house, but anyone who touches her is transformed into an animal…
On the Kōshū Kaidō road, merchant Sōjirō is poisoned, robbed, and pushed off a cliff by former courtesan Okuma and her lover. A year later, a fugitive named Shinsuke, on the run after killing his wife, encounters a sinister, heavily made-up man. He soon realizes this man is the vengeful spirit of Sōjirō…