During a summer visit to Kinmen Island, Ah Kwan (played by Bryant Chang) discovers online that a beautiful girl named Chen Wen Qing (portrayed by Shara Lin) has won the National Piano Competition. By chance, he encounters her, and they both experience the most memorable summer vacation of their lives. Before parting, Wen Qing assures Ah Kwan that she will email him daily and promises to return to Kinmen to see him the following summer.