Rinko lives with her daughter and her husband when her husband is assigned to work alone. It's more distracting than being alone, but I'm still lonely and comforting alone at night. Then, the shadow of the big cock is reflected behind the door ... Rinko, who noticed that her son-in-law, Kunio, was secretly peeking, continued to boldly invite her all the time in search of a too big big cock. And Kunio, who has drowned in the eros that oozes from his mother-in-law, asks her to devour her body as she is swept away.