Su Yu transmigrates into a novel as the disposable wife of the infamous villain, Gu Chen-a ruthless and paranoid man destined to lose everything, go insane, and die in prison. But having read the novel, Su Yu knows the truth: beneath Gu Chen's cold exterior is a lonely, gentle man who was misunderstood by everyone. Determined to change his tragic fate, Su Yu treats Gu Chen with genuine kindness, slowly melting the villain's heart. As Gu Chen gradually lets go of his obsession and learns to trust, Su Yu believes his mission is complete and prepares to leave. That's when everything goes wrong. Gu Chen refuses to let him go, convinced that Su Yu has always loved his younger brother, Gu Yi'an, and only approached him as a substitute. Only then does Su Yu realize he never finished reading the novel-the extra chapters reveal that the original owner of his body secretly obsessed over Gu Yi'an. Now trapped between a misunderstood past and an increasingly possessive villain, Su Yu can only wonder: how is he supposed to save someone who's already fallen hopelessly in love with him?