Due to numerous misunderstandings, Shen Nanzhi reached the end of her marriage with Lu Chenzhou. Pregnant, she left home on a rainy night, was helped along the way by Gu Huaijing, and subsequently went abroad to live. Five years later, in the identity of the long-lost heiress of the Qin family, she returned to her homeland with a pair of fraternal twins, taking care of her children while exploring the dust-covered past. Step by step, as she untangled past events, she cleared up the misunderstanding of the proxy marriage back then, clarified the past deviations caused by Shen Mingzhu, unraveled the mystery of the life-saving grace being misplaced and claimed by another, and even dragged to light the origins of a baby swap behind a jade buckle twenty-five years ago.