A wife who lacks nightlife and spends her days frustrated. One day, while wiping down her father-in-law's body, she can't help but get excited as his penis swells up right before her eyes. After that, the wife thinks about her father-in-law's crotch and masturbates. Seeing her lewd behavior, the father-in-law also gets excited and starts jerking off. Their emotions escalate, and they finally cross the line.
