A case of mistaken identity leads Bai Yuning to marry Gu Yue. For years, she endures humiliation and neglect from Gu Yue and insults from her mother-in-law. After paying off his gambling debts, she reclaims her identity as the eldest daughter of the Bai family, only to face his suspicion and infidelity. Deeply disappointed, she decides to stop tolerating his mistreatment. After their divorce, she transforms step by step into a confident and powerful woman. Meanwhile, Gu Xiaoyu, the head of the main Gu family, silently protects her. Only then does she discover that he was the little boy who protected her all those years ago...