Xu Zhiyi devoted four years of her life to caring for her "terminally ill boyfriend," Gu Chengze, even making money by running a street stall to pay for his treatment. But after the Gu family came to claim him and welcome him back into the family, he publicly dismissed her as nothing more than a nanny. Heartbroken, Xu Zhiyi decides to start a new life on her own, only to unexpectedly reunite with her first love, Lu Yanzhou, from her younger days. With Lu Yanzhou's respect and support, she gradually regains her confidence and uncovers the mystery of her own identity. As it turns out, she is actually a long-lost member of a wealthy family. Faced with Gu Chengze's remorse and relentless attempts to win her back, Xu Zhiyi refuses to look back.