One day, Kazuko Mitsumine received a visit from Hiroshi, her son's classmate. Her son had recently moved to the countryside for work, and Hiroshi came by out of concern for Kazuko living alone. Widowed several years ago, Kazuko had continued living by herself. Hiroshi entered her home, and they ended up bathing together. When Hiroshi peeked through the bathroom door, he was captivated by Kazuko's voluptuous body. Overcome with desire, he embraced her and took her right there.