After breaking off the engagement I was spoiled by the uncle

Lin Shi is a highly skilled martial artist and medical expert who has spent the last eight years investigating the death of her mother, Yang Tingxue. Her mother was a renowned doctor in Yang Cheng who was falsely accused of manufacturing fake drugs and conducting illegal clinical trials that resulted in the deaths of multiple children. Yang Tingxue was arrested and subsequently committed suicide by setting herself on fire. Lin Shi, who was only eight years old at the time, has dedicated her life to finding her mother's lost research report to clear her name and expose the true murderer behind the conspiracy.

Eight years after the tragedy, Lin Shi decides to return to Yang Cheng to infiltrate the powerful Feng family, believing they hold the key to the truth. Her biological father, Lin Bohuan, abandoned her and her mother to marry into the wealthy Tang family. He now brings Lin Shi back to Yang Cheng with the intention of using her to fulfill a childhood marriage contract between her and Yu Chengfei, the grandson of Feng family patriarch Master Feng. This union is meant to save the declining Tang family from bankruptcy by reconnecting them with the Fengs. Lin Shi agrees to this arrangement solely as a means to gain access to the Feng family and investigate the past.

Upon arriving in Yang Cheng, Lin Shi encounters Feng Yao, a mysterious and dangerous member of the Feng family who is currently being hunted by unknown assailants. In a dark alley, Feng Yao uses Lin Shi as a shield to evade his pursuers, forcing a kiss upon her to avoid detection. Lin Shi, unfazed by the encounter, swiftly dislocates his arm in self-defense before leaving him injured. Feng Yao, intrigued by her cold demeanor and exceptional martial arts skills, begins to investigate her identity. He discovers that she is the daughter of his former teacher and that she may possess the research report his organization seeks.

Lin Shi enrolls in Yang City High School, the top educational institution in the city, where she effortlessly scores perfect marks on a difficult entrance exam, shocking the faculty and humiliating a teacher who had mocked her. She is placed in Class Four, where Yu Chengfei studies. At the Feng family's seventieth birthday banquet, tensions rise as the Tang family attempts to force the marriage contract. Yu Chengfei openly rejects Lin Shi, insulting her background. In response, Feng Yao makes a dramatic declaration that he will marry Lin Shi himself if her nephew refuses, effectively halting the immediate conflict and drawing everyone's attention to her.

During the banquet, Tang Wanqing, Lin Shi's stepmother, attempts to drug Yu Chengfei's wine to force a scandal that would compel the Feng family to accept the marriage. Lin Shi intercepts the plan, secretly switching the target so that Tang Wanqing herself becomes the victim of the drug. As Tang Wanqing causes a public spectacle, Lin Shi uses the chaos to search the Feng residence for the research report. She confronts Feng Yao again, leading to a physical altercation where she dislocates his shoulder once more. Despite the hostility, Feng Yao remains fascinated by her, suspecting she is hiding something significant. The story concludes with Lin Shi having successfully entered the Feng family's inner circle, while Feng Yao begins to close in on the truth about her mission and the location of the research report.