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 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.