Ai Wei (played by Yip Yu-ching) is a well-known surgeon. She has a long-time colleague and boyfriend, Lee (played by Lam Wai-chen). The two have a very stable relationship. By chance, Ai Wei accidentally ran into Lee's affair with her bestie. The devastated Ai Wei decided to go to Macau to relax. The hospital received a seriously injured patient named A-Long (played by Simon Yam). After finally waking up, A-Long found that he had lost his memory. It was such a man with a blank past who met Ai Wei unexpectedly. As time went by, the distance between A-Long and Ai Wei became closer and closer, and their feelings quickly heated up and became inseparable. However, Ai Wei understood that he would eventually return to Hong Kong and return to his post, and the affectionate A-Long decided to follow. A-Long forgot the past, but the past was unwilling to let A-Long go. Following closely behind were the evil and rampant gangsters.