Lin Yan, in order to study abroad, accepts a mission to sabotage Song Yizhou's arranged marriage. She impersonates the woman Song Yizhou admires, successfully making him fall in love. However, just as she completes her mission and prepares to leave, Song Yizhou discovers the deception. His obsessive personality and intense possessiveness are fully revealed, leading to a series of conflicts and entanglements. But when Lin Yan falls into despair, Song Yizhou unexpectedly chooses to let go. However, this seemingly liberating decision is actually the beginning of another, more tightly woven bond that she cannot escape.