Young architect Xu Kaiming is handsome and promising, and regarded as a proud son-in-law in the eyes of madams. He has many admirers but he loves no one and only wants to find a beautiful and bright wife. One day, he meets Shao Zigui and they fall in love at first sight, promising to stay together for the whole life. He thinks she is the one but Bei Xiuyue, the twin sister of Zigui, appears and he has a crush on her. 'The truth is that I have been looking for you and misunderstand Zigui is the one until I meet you.' However, Xu Kaiming is a responsible man and he marries Zigui but the life is unhappy. After the divorce, he comes to Xiuyue but the latter, romantic and affectionate, is preparing for her wedding. She becomes the one he cannot get and his eternal regret.