The son's wife tries to help her father-in-law, who has been listless since his mother-in-law passed away, regain his energy somehow. Seeing her often expose herself in a vulnerable state because of her family, the father-in-law's lower body is filled with desire. When the father-in-law begs her to let him hold her just once, the daughter-in-law gives in on the condition that it's just once. While the father-in-law is satisfied with his satisfaction, the daughter-in-law, who has awakened to the pleasures of sex, suddenly transforms into a devilish daughter-in-law who enjoys teasing her father-in-law so much that he runs out of semen.