Yixue, a sensible and thoughtful thirteen-year-old girl, often helps the neighbors look after their children.
The little grown-up scholar Xiaobo, the mischievous little chubby boy, and Lele, who's been spoiled like a princess, are all frequent visitors to her home.
One day during summer vacation, the four friends go to play in the hills behind Tonghua Alley. They pass through a strange house and arrive in another world, completely different from reality.
To help their new friend Wuzhen, they set off on a journey to the "Soul Castle," beginning a series of adventures.
The legendary Kui Ox, a little goblin hiding in someone's ear, the Firelight Beast living in the forest of "Unburning Trees," and the Wind Civet, which can come back to life by opening its mouth to the wind...
Theme: Adventure and growth
