Daughter-in-law Yurika Aoi came to the house to take care of her father-in-law, because her profession was a nurse at a hospital, but unexpectedly it was just an excuse for the vile father-in-law to indulge in perverted games with his daughter-in-law, he made her take care of him even sexually. He filmed it all and showed it to his sons so that they could take turns to love his daughter-in-law.