The protagonist, a powerful female emperor from the primordial era, is reborn as Shen Li, the adopted daughter of the Shen family. She is forced to marry Mo Yunzhuo, the crippled young master of the Mo family, in place of her sister. She initially views this new life as an opportunity and begins to care for Mo Yunzhuo, despite his protests and desire for a divorce.

Shen Li quickly demonstrates her martial arts skills and keen intellect, defending Mo Yunzhuo from bullying, particularly by Shen Meng, her adopted sister. Mo Yunzhuo, initially reserved, starts to observe Shen Li's unusual strength and caring nature. Shen Li even attempts to heal Mo Yunzhuo’s legs, proposing a one-year pact to see if their relationship develops.

Shen Meng and her mother continue to scheme against Shen Li and Mo Yunzhuo. After an incident where Shen Meng tries to drown Shen Li, Mo Yunzhuo uses his influence to expose Shen Meng's true intentions, turning public opinion against her. Shen Li, with a new agent, begins her career in entertainment, using her abilities to her advantage.

Shen Li confronts the Shen family to retrieve 100 million yuan, a dowry from the Mo family that she believes rightfully belongs to her. She uses her intimidating presence and martial arts skills to force them to return the money. Meanwhile, Mo Yunzhuo investigates Shen Li's mysterious past, learning about her adoption and tragic origins.

The Shen family attempts to meddle further with the Mo family, trying to replace Shen Li with Shen Meng again. However, Mo Yunzhuo, now more active and using his intellect, exposes the Shen family's manipulative behavior and defends Shen Li. Mo Yunzhuo's own family dynamics are revealed, including the truth about his stepmother's schemes and his father's complicity through a paternity test.

Shen Li continues her healing efforts, eventually curing Mo Yunzhuo's legs. In a moment of vulnerability, Shen Li reveals her true identity as a reborn female emperor from 500 years ago, and that the body she inhabits is not her own. Mo Yunzhuo accepts her truth, admitting his feelings and deciding to marry her officially.

Mo Yunzhuo, fully recovered, takes charge of the Mo Group at a board meeting, exposing his stepmother and half-brother's plots and securing his position. He and Shen Li then decide to make their marriage official, signifying their commitment and shared future together.