Toshio's wife, Yumiko, has been hospitalized and he and his father, Haruo, are living a desolate life. - One day, Yumiko's mother, Chizuru, comes to visit her house as she grows tired of the taste of instant food. - Toshio gratefully accepts Chizuru's kindness as she cleans up his messy room and serves him hot home-cooked meals, but... - From that day on, Chizuru visits Toshio's house every day. - Chizuru's overflowing motherhood and overflowing body are too stimulating for Toshio, who lost his mother when he was young.