One foggy spring day, the 12-year-old Hyeok-su meets the young Eun-hye and determines then and there that he will love her for the rest of his life. Many years later, Hyeok-su is preparing to enter college when he rescues a woman from assault. It turns out to be Eun-hye. Despite the passage of time, neither had forgotten the other and they renew their relationship. However Fate, perhaps in an attempt to add interest to this story, places another smitten man in Eun-hye's life. He is also determined that he will marry Eun-hye. Eventually, Eun-hye is forced to choose between them
