When the Forbidden City fell in the late Qing Dynasty, the sinister and arrogant little prince, the eccentric little maid, and a little kid accidentally fell into an ancient tomb and obtained the elixir of immortality. From then on, the three people lived together in the human world for generations. Until they came to Shanghai... The various things and people they encountered in Shanghai also changed the relationship between them. In the end, the death of that person finally caused her to part ways with him...