An elderly person living with their son and daughter-in-law. The son plans to demolish the house and sell it for profit, while the daughter-in-law secretly enjoys an affair behind her husband's back. One day, enraged by his daughter-in-law's hypocrisy, the elderly person confronts her about the suspicion of infidelity. Fearing exposure, she apologizes. In a fit of passion, the elderly person spanks her. However, this awakens the dormant M-sadistic tendencies within her…
