Her husband's father falls down the stairs and injures himself. Worried about her father-in-law, who has been losing his energy since moving out on his own, the couple visits his parents' home. Kanna, the daughter-in-law, sees her husband off to work and diligently helps take care of her father-in-law. As she gently dries her father-in-law's body, who hasn't even had a bath, a long-dormant male instinct awakens. He feels the warmth of a woman for the first time in a long time, and the familiar atmosphere somehow reminds him of his late wife...