The Northern Garrison Prince possesses authority that reaches all the way to heaven, surpassing tens of thousands of people. The Northern Garrison Prince is licentious and lustful, not distinguishing between female and male partners, with a brutality beyond compare—though he has taken nine concubines as wives, not a single one managed to survive. This time, the Northern Garrison Prince is interested in the daughter of the prefectural magistrate.

To prevent her fate of being tormented to death by the Northern Garrison Prince—just as the crown prince was switched with a raccoon dog—a mute s*ave from the magistrate's residence is sent as a substitute on the marriage sedan. The mute s*ave was born with the beauty of an exiled immortal, but also the disability of voicelessness; because of his appearance that might attract misfortune, he was locked away in the courtyard by his mother.

Suddenly one day, the prefectural magistrate's household bestows upon him the name of Shen Yu and sends people to teach him how to serve another before delivering him onto the bed of the "Living King of Hell." Will he become the tenth ghost to die unjustly under the Northern Garrison Prince's body?