The elderly father-in-law harbored intense lust for his son's wife. One day, his pent-up desire exploded, and he began tenderly licking his daughter-in-law's back and groin. The wife, who had only ever known her husband intimately, was unaccustomed to another man's advances, yet she found herself captivated by her father-in-law's skilled tongue. She started masturbating constantly, his image filling her mind, until finally she could no longer resist and succumbed to a forbidden relationship with the old man sleeping in the next room.