Riona, a wife who has been living a fulfilling life with her husband. Taking advantage of her husband's business trip, she takes care of her father-in-law alone, but Riona raises her hand unintentionally to her demented and lascivious father-in-law. I regret that my father-in-law wasn't ill, and the next day, I was raped by my father-in-law who was lustful during long-term care. Riona resists, but she cums unintentionally to caress her father-in-law's desires and enjoys the pleasures that she hasn't felt for a long time. Even when she was old, she was attracted to her act with her father-in-law who was greedy for sex.