I am Lin Chutang, an unpopular concubine in the Lin Mansion. In order to compete for my mother's living space and my own future, I disguised myself as a man and entered the largest academy in the capital, Mingyuan Academy, to study. On the first day of school, I was framed by my eldest sister Lin Ruoxue for "stealing the four precious treasures of the study room." I used the college rules to rebel and expose her hypocrisy; then faced with the "expulsion conspiracy" of my aunt Wang's collusion with the college management, the isolation of the powerful children, and the false intimacy of classmate Bai Lianhua. With my ability to observe words and logical reasoning, I gradually exposed the conspiracy, won the trust of my classmates, and consolidated my position in the college. At the same time, I discovered that the "disappearance case" in the academy was related to the competition for Lin's family property. I cooperated with Xie Jingxing, an undercover agent who was investigating, and exposed the truth that the Wang family colluded with outsiders to seize the family property. Eventually, my aunt was overthrown and my sister lost her support. I relied on what I learned in the academy to become the actual manager of the Lin family, and worked hand in hand with Xie Jingxing to achieve happiness.