Fang Yuean is a demon recognized by the gods, currently undergoing her hundredth reincarnation as a human to experience mortal emotions. Her spiritual powers are sealed, and she is accompanied by Huai Ze, a minor immortal tasked with supervising her to prevent her from causing harm. Upon waking in her new life, Fang Yuean discovers she has been reborn as the true daughter of the Marquis household, Qin Xuan, who was swapped at birth with the step-grandmother’s widowed niece. The fake daughter, Fang Miaoyi, was raised as the beloved child of the first branch, while the real Fang Yuean was thrown into a river to drown. After surviving the attempt and enduring years of hardship, including being sold to a brothel, Fang Yuean escapes at age five with the intent to reclaim her family and correct the distorted fate book she had previously torn apart in the Hall of Reincarnation.
Fang Yuean successfully reaches the Marquis residence and presents herself to her mother, Qin Xuan. Through her ability to project her thoughts, which Qin Xuan can suddenly hear, she reveals the truth about the swap and the murder attempt. Qin Xuan, already suspicious due to the unexplained injury of her other daughter, Er’er, who fell from a rockery and became mute and slow-witted, begins to investigate. She confirms that Madam Meng, the step-grandmother, and her daughter Zhou Huajin, the second madam, are behind the schemes. The second branch of the Fang family covets the marquis title and has been systematically eliminating the first branch’s members. Qin Xuan decides to keep Fang Yuean, naming her Yuean, and resolves to protect her true children while exposing the conspirators.
As the story progresses, Fang Yuean uses her limited spiritual power and knowledge of the future to aid her family. She administers an immortal pill to Er’er, which begins to restore her cognitive abilities and allows her to see supernatural entities like Huai Ze. Meanwhile, Qin Xuan and her eldest son, Fang Xunli, who can also hear thoughts, work together to counter the second branch’s plots. They discover that Fang Xuze, the second branch’s heir, is involved in scandalous behavior, including impregnating multiple women, which threatens the family’s reputation and his marriage prospects. Fang Yuean orchestrates events to bring these scandals to light during a recognition banquet, aiming to destabilize the second branch’s plans.
The core conflict centers on the struggle for power within the Marquis household and the broader political implications, as the first branch’s military influence makes them a target. Fang Zhan, the father and heir, is missing after being rescued by a village family and pressured into marriage. Qin Xuan sends agents to rescue him before he is permanently bound to another family. The narrative follows the family’s efforts to unite, expose the treachery of Madam Meng and her allies, and secure their future against the encroaching threats from both within the household and the imperial court.
