Hu Yunji is a little fox who has only just taken human form. Unfamiliar with the ways of the world, she is innocent yet still has her animal instincts, and she does whatever she pleases.
Until she meets him: Gu Cangshu, a Taoist priest.
They start out as enemies, but soon become constant companions, traveling together and experiencing the love and hatred of the human world.
Little by little, she comes to understand her own path, while he loses his way and gives his whole heart to her.
The arrival of Gu Sidao shatters their peaceful life. Arrogant and scheming, she repeatedly leads Hu Yunji and the others into danger. She wants to tear them apart and wants Hu Yunji to go with her.
Thematic message: Demons cultivate humanity, humans cultivate the Dao, and all the joys and sorrows of life are part of cultivation.