After losing her beloved Cheng Xing, Su Nian mistakenly believes that Cheng Xing's heart was transplanted into Jiang Yi. Willingly becoming Jiang Yi's substitute, she endures his indifference and the repeated humiliations inflicted by his first love, Xu Qin. After suffering countless injuries, Su Nian finally comes to her senses and walks away. Only after losing her does Jiang Yi regret his actions and relentlessly pursue her, cruelly shattering her emotional support and driving her into severe depression and hospitalization. Su Nian later discovers that Cheng Xing's death was part of a conspiracy orchestrated by the Jiang and Xu families, and decisively reports their crimes to the police. Xu Qin dies, while Jiang Yi suffers the consequences of his own actions and dies of heart failure. Letting go of her past pain, Su Nian gradually heals with Xie Yu's gentle companionship and steps into a new life of her own.