He was accidentally transformed into the son of the general of Nanliang Zhenguo. As soon as he opened his eyes, he was tied up in the cleansing room and waited to be stabbed with a "click". Fortunately, the knife maker was from the general's old department and helped Long Chen escape from danger after recognizing his identity. But the manager of the cleansing room suddenly came to investigate, and Long Chen could only pretend to be a seriously injured young eunuch, and was sent to the palace of the fourth princess who was murderous. The fourth princess has a volatile temperament. There are spies everywhere in the palace. The identity of the fake eunuch may be exposed at any time. She has to practice exercises to regain her strength while hiding her identity. She is in a difficult situation. However, Long Chen has to overcome this adversity and step by step to reach the throne of the Nine-Fifth Supreme Emperor!