A married woman named Rio lives with her husband and father-in-law! She believed that her happy life would continue, but her father-in-law, who was lustful for her voluptuous body, suddenly attacked her and creampied her... It didn't end with a single time, and from that day on, she continued to satisfy her father-in-law's sexual desires... Although she was reluctant, the wife was driven crazy by her experienced techniques, and eventually she became a female slave who swung her hips on her own, seeking her father-in-law's dick...!