Meng Yitong, a dedicated intern lawyer who worked long hours at a law firm, dies from overwork and transmigrates into the body of a twenty-one-year-old heiress with the same name. The original owner, a stunningly beautiful but frivolous student at the Capital Dance Academy, lies in a hospital bed with a severe concussion after being pushed by her cousin, Meng Gaoxuan. The incident occurred during a heated family argument regarding an arranged marriage. Meng Yitong wakes up in a luxurious hospital room, initially confused by her new, delicate hands and flawless appearance, before realizing she has inhabited the body of a wealthy girl she never knew.
The original Meng Yitong was the daughter of Meng Jianjun and Su Mei, a marginalized branch of the powerful Meng family. Her cousin, Meng Wanbai, was the favored granddaughter, trained since childhood to be the family's pride. When Meng Wanbai ran away from her arranged marriage to Qin Zhuoran, the heir to the prestigious Qin family, the family patriarch, Old Master Meng, forced Meng Yitong to take her place. The Qin Zhuoran is known for being a capable young CEO who was disfigured by a burn on half his face, leading to rumors of his unstable temperament. Upon learning of her situation, Meng Yitong discovers the original owner's chaotic life, including significant debts and a history of supporting a young male celebrity. Despite the risks, she agrees to the marriage after her grandfather offers substantial compensation: five percent of the Meng Group shares, annual dividends, and the Bishui Mountain Manor, a massive eco-resort intended as the cousin's dowry.
Meng Yitong uses her legal expertise to negotiate the terms, ensuring the dividend beneficiary is changed to her younger brother, Meng Yuanliang, to secure his future. She also discovers that the family fund was being manipulated against her branch of the family. Her parents, though loving and protective, are portrayed as somewhat naive and financially imprudent, having lost their own business ventures in the past. Meng Yuanliang, an athletic and straightforward eighteen-year-old, is initially seen as simple-minded but proves to be loyal and protective of his sister. The family dynamic is warm, providing Meng Yitong, an orphan in her previous life, with the first true sense of belonging she has ever experienced.
As the wedding approaches, tensions rise within the extended family. Aunt Meng, the wife of the family heir Meng Mingyu, and her mother-in-law resist the loss of the mountain manor to Meng Yitong. The Qin family, meanwhile, shows little interest in a traditional wedding, citing Qin Zhuoran's busy schedule and reclusive nature. Meng Yitong faces a nightmare vision of her future, depicting a tragic path where she is abused, divorced, and left destitute, with her brother killed in the chaos. This vision drives her to prepare for the worst, planning to maintain a low profile and secure her financial independence regardless of the marriage's outcome. The story concludes with the family confronting Old Master Meng about the lack of a proper wedding ceremony, highlighting the power struggle between the marginalized eldest branch and the dominant second branch, while Meng Yitong prepares to enter the formidable Qin household as a substitute bride.
