Twenty-four-year-old jewelry designer Xu Zhiyi and Gu Yan, the head of the Gu family, have known each other for five years. Their relationship grows from the closest of friendships into love, but an old case sealed away for twenty-four years draws them into the secrets of two powerful families. As the truth about her identity comes to light, Xu Zhiyi discovers that her mother's death was connected to both the Gu and Xu families. She and Gu Yan also find themselves repeatedly making choices on each other's behalf in the name of love and protection. Under the weight of the truth, their careers, and family ties, they finally understand that true love is not about sacrificing oneself for the other, but about respecting each other's lives and walking side by side toward a future of their own.