Gifted with extraordinary abilities, Cen Yanxiu descends the mountain to search for his family. By chance, he encounters Cen Bingheng, who has been ambushed, and confirms their blood relationship through half of an amber pendant. Pretending to be mentally slow, he lies low in the Cen family, protecting his younger sister, Cen Shutáng, while secretly gathering evidence. As he navigates the schemes of his stepmother, Yu Qiwei, and other villains such as Pei Shaoheng, he uncovers their conspiracy to seize the family fortune through a series of events, including a rescue at a mine and a confrontation at a banquet. He gradually exposes the many deceptions surrounding his true identity and ultimately brings all the conspirators to justice, allowing the family to reunite.