Modern young man Liu Shuai travels through the Wufeng Dajing Dynasty, wakes up and is tied up in a cleansing room about to be castrated. At the critical moment, he recognizes that the cleansing manager is Liu Jin, the original owner's uncle who has been separated for 23 years. The uncle couldn't bear to end the Liu family's incense and took action to keep his body intact. Liu Shuai stayed in the palace to survive, relying on modern knowledge to deal with the nine princesses and the empress Helianxue.