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A former doctor believes he may have found a connection to the woman he loved and lost in this romantic melodrama. Ko (Andy Lau) is a young doctor married to Zi-qing (Charlene Choi), but while he has a beautiful and caring wife, Ko's career is time consuming and he doesn't get to spend as much time with his spouse as he'd like. After Ko breaks a dinner date with Zi-qing, she's driving home when her car is struck by another driver; she dies shortly afterward. Shattered by the news, Ko leaves behind his career as a doctor and takes a job driving an ambulance. When Ko answers an emergency call at a car crash, he finds himself looking after Tse Yuen-sam (Charlie Young), a school teacher who recently received a heart transplant. Zi-qing donated her internal organs for transplant, and Ko senses that Yuen-sam now carries the heart of his late wife. Eager to know more about Yuen-sam, Ko finds her home and reads her diary, learning that her love life has not been happy – she was married to a dress designer who was having an affair with a model, and Yuen-sam confronted him with the news, he opted to divorce her and take up with Amber Xu. Having saved Yuen-sam's life, he now takes it upon himself to help her find the kind of happiness he lost when Zi-qing died.