Yuna, who has been married for several years and is struggling with her relationship with her husband, attends a class reunion for the first time in a while. There, she met Ozawa, a teacher she admired, and they exchanged contact information and began to talk to each other about her husband's problems. One day, Yuna witnesses her husband and his cheating partner walking happily, and in a very haggard state, she contacts Ozawa. Ozawa gently embraces Yuna, who is grieving, and even though he feels guilty, he kisses Yuna. Yuna responds by intertwining their legs and pressing their sweaty bodies into close contact...