The female protagonist Lin Wantang is the male protagonist Gu Yanzhi's substitute Bai Yueguang - Bai Yueguang is his dead first love Shen Qingyi. During his three-year career as a stand-in, Lin Wantang was humble and patient, giving everything he had, but never got a trace of sincerity. When she finally decided to leave, she discovered that the truth was far from simple: she was not "like" Shen Qingyi, she was Shen Qingyi - the person who lost her memory due to a car accident and whose identity and memory had been tampered with by Gu Yanzhi.
