In 1986, Xu Nian'an, an educated youth who returned to the city, was already the backbone of a foreign trade company. A contract related to the survival of the company pushed her to Hong Kong businessman Shen Muchen, a gentle and wealthy man who always stared at the phantom of nothingness through her. She was forced to become the substitute for "White Moonlight" in his heart, struggling between humiliation and reality. Until she found the handwriting of her first love who was buried on the northeastern cliff seven years ago in his locked drawer, as well as the name of a strange woman. The truth splits time like a thunder: Under Shen Muchen's perfect skin, there is the deceased Lu Dashan who had undergone plastic surgery; and the eternal "White Moonlight" he spent half his life pursuing and imprisoned by her figure was the educated youth lover named Xu Nian'an whom he buried with his own hands. When the substitute discovered that she was actually him.