When cat spirit Luo Xiaohei's home is deforested by humans, he must find a new one. He runs into a group of other spirit creatures who take him under their wing with dreams of reconquering the land they say is rightfully theirs. However, they run into a human known as Wuxian who separates Luo Xiaohei from the other spirits and the two go on a journey, with the cat spirit learning to control his abilities as well as forming his own thoughts on whether or not he should ally with the spirits or the humans.

Xiaohei had lived a peaceful life with Master Wuxian in a village and had gradually adapted to life in the human world. Two years later, the Spirit Hall was suddenly attacked and Wuxian and Xiaohei received a request to go to the guild hall. Can Xiaohei overcome this sudden trial? In the face of unexpected enemies, what choice will Xiaohei make...