There is a little fox in Damishan, with a fluffy tail, pink ears, a lolita body, and a sinister heart. One day, the little fox wanted to go down the mountain to survive the tribulation and find the senior sister who had not returned from the palace many years ago. By accident, she was mistaken for the long-lost daughter of the White House, and was selected into the palace in a daze. So the question is, as a demon who is new to the world, how can the little fox find clues about his senior sister in the deceitful palace, how can he successfully overcome the disaster, and how can he get rid of this national master who has been hanging around him and smiles more like a fox than a fox?