A snake god, prisoner in a cave since thousand years, takes possession of a man and transforms his arm in a snake. Under this form, the man rapes and kills women. Twenty years later, the man bites his own daughter, who is also transformed. With the help of her fiance, of another man who wants to marry her, and a sorcerer, she tries to struggle against the malevolent snake god.

The story is a folk-tale, about the spirit daughter of the god of foxes, forced into service to the god of snakes, falling in love with a human scholar/ priest who happens to know a warrior/ priest who is dedicated to destruction of all such spirits.