The heroine Hua Ya looks like many people, so she is regarded as a substitute for the obsessed person by Chang Yiming. As she gets along, she gradually discovers that her best friend Dou Yan, a blind girl, etc. Have bumped into her one after another, and everyone is trapped in the strange circle of "Bai Yueguang and the substitute". As her life experience and past events continue to be revealed, Hua is surprised to realize that she is not only the shadow of others, but also the original Bai Yueguang that everyone is looking for. In the end, she broke free from the shackles of her identity, let go of her misplaced feelings, and found her true self.
