It tells the story of Yan Zhixia, the daughter of a minister, who disguised herself as a man and mistakenly entered the palace. She was mistaken for a young eunuch and could not escape. Then she met the emperor Yan Jin, who was handsome and had a strange personality. She was forced to become the emperor's personal eunuch. Step by step, under Yan Jin's enslavement and help, she became the chief eunuch. However, there was a twist in the story. Zhixia originally thought that she was gifted, but the reality was that Yan Jin knew his daughter's identity when she entered the palace. It seemed that she was a cute little eunuch fighting monsters and upgrading to seek a higher position, but in fact, it was the emperor who was strategizing and flirting with girls.