The heroine Su Jinse is the orphan of the former prime minister. Her family was framed and exterminated. She narrowly escaped as an illegitimate daughter, changed her name and entered the palace, with the goal of getting close to the center of power to find out the truth. She is meek and timid on the outside, but on the inside she is thoughtful, good at observation and forbearance. The male protagonist is Chu King Li Mubai, the youngest brother of the emperor. He appears to be a romantic and dandy, but in fact his mother and concubine died in vain, and they secretly run a power with the intention of revenge. The two met for the first time at a palace banquet. The male protagonist was attracted by the female protagonist's unusual calmness and the hatred hidden in her eyes. The female protagonist took a fancy to the male protagonist's identity and usable value, and reached a "cooperation". As the investigation deepened, they discovered that the murder of the family and the death of Queen Chu's mother-in-law all pointed to the most favored concubine Shu in the dynasty and the family power behind her. Concubine Shu has a pathological possessiveness and love for the King of Chu. Because of her love, she hates her. She regards the heroine as a thorn in her side and sets up countless poisonous schemes. With her extraordinary wisdom and courage, Su Jinse worked her way through the palace to resolve crises, and gradually won the attention and some trust of key figures such as the emperor and the queen mother. She and the King of Chu were dependent on each other and redeemed each other through life and death, and their love was deeply rooted. However, the secrets of life experience, revenge and court strife constantly test their feelings and trust. In the end, the two men broke through the disguise, integrated all the clues and power, and at the emperor's birthday banquet, they exposed in one fell swoop the shocking crime of Concubine Shu and her gang members who murdered the late concubine, framed Zhongliang, and intended to shake up the country. The injustice was brought to light, and the mastermind behind the scenes was brought to justice. Su Jinse regained her identity and faced the new dynasty together with the King of Chu.