Bewitched Area of Thousand Years

Original title: 千年魔界

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.