The story is about an 11 years old ordinary girl Li Xiaoyu, who finds a magic gem earring in the Forbidden City. Guided by the gemstone earring, Xiaoyu stumbled into the world of divine beasts hidden in the Forbidden City. The beasts, immortals, spirits and monsters that usually stay on the eaves, railings and frescoes as statues, all come to life in this invisible world of prosperity. From then on, every time the sun and moon turn, Xiaoyu will be transported to the world of divine beasts, and as the guardian chosen by the jewel, she will help the divine beasts to solve various problems.