Su Wan is a calm, clear-headed ordinary young woman who bears a striking resemblance to Shen Qingyi, the late first love of the male lead, Gu Yanchen. Mistaken for a substitute, she signs a contract with him. She diligently plays the role of the “perfect substitute,” but just as their three-year agreement is about to expire, she unexpectedly becomes pregnant and gradually uncovers a string of suspicious details surrounding Shen Qingyi’s death. When the truth comes to light and the contract ends, she leaves without looking back. Only after losing her does Gu Yanchen realize he has long since fallen in love with the real woman, not her shadow. He launches into a frantic campaign to win her back, only to discover that he faces more than Su Wan’s cold heart: there is also a vast conspiracy buried in the past…
