It's been two years since he married Sumire, an office worker, and started working together as a married couple. One day, Sumire ends up in the hospital with gastroenteritis. Meanwhile, Sumire's mother, Kanae, visits Taro's house and helps her with the housework... Taro is shown vividly the "homely" appearance of Kanae, whom she hadn't seen in a long time. And in her Taro, feelings for Kanae surpass her "her mother-in-law".
