The Great Yong Chao Hall was turbulent, and the princes fought hard for the throne. The seventh prince, Li Chengyao, whose mother's family was in a weak position, spent all his time walking around and playing with birds and pretending to be an idle loser. He was ridiculed by the whole court. No one knew that he secretly gathered the nobles from the poor family and planned step by step to seize the throne. Su Ninghua, the daughter of the guilty minister, was wronged by her family and was secretly rescued by Li Chengyao when she was in dire straits. She is smart and resourceful, and has single-handedly built a business intelligence network all over the country. She is willing to become a behind-the-scenes counselor and accompany him through dangers.
One person pretends to be a pig and eats the tiger to hide his edge, the other person holds back and plots to clear his grievances, and the two work together to break the situation, one overtly and the other secretly. Slapping the arrogant legitimate prince in the face, scheming against the hypocritical third prince, confronting the domineering nobles of the family, assassinations in the court, siege in the market, and frame-ups in the court followed one after another. To the outside world, Li Chengyao always puts things aside and takes advantage of others, but he only protects Su Ninghua until the end, and his sweetness quietly grows. Seeing that the situation of seizing the heir has been decided, an old palace case that has been buried for decades suddenly surfaces, which not only involves the truth about the Su family's unjust case, but also reveals the hidden story of the death of Li Chengyao's mother and concubine. The road ahead for the two of them is instantly plunged into confusion.