Ai is a timid and modest married woman. But contrary to her inner self, her plump white skin silently arouses men. Her father-in-law is no exception. When his son isn't looking, he plays with Ai's body, forcing his tongue into her closed lips! The father-in-law repeatedly humiliates his shy wife, enjoying the sight of her beautiful white skin flushing. At the height of his twisted carnal desire, Ai discovers pleasure!