In the God-locking barrier set by the heaven, there lived a happy little fox demon. She has no memory or spiritual power. She enjoys growing vegetables, eating, and peeking into the world with fake magical instruments every day.
On this day, a man who claimed to be her "husband" broke the barrier, rescued her, and vowed to help her take revenge from heaven. But the little fox demon longs for freedom in the world and just wants to be a happy snack.
Later, at the foot of the mountain, she met the half-demon of that village and Shi Lin, the reincarnation of her former lover. In her chaotic life, she resolved one crisis after another and finally escaped to the mortal world.
However, with the appearance of Ban Jiangjiang, the young master of the Ghost Tribe, his childhood sweetheart Anu and others who have heard about the changes in the three worlds, and experiencing the adventures of monsters and monsters, the wonderful life that Ayu thought was a trap set by someone step by step, and the heart-wrenching scars from the past are gradually revealed. Ayu still chose to forgive, even though it was difficult to repair the demon body and was destroyed by the one he loved, and he became a mortal and was betrayed by his lover.
And when she watched her relatives and friends die because of her, and the person she trusted the most behind her planned all of this, Ayu finally turned into a devil. Only then did everyone discover her true identity. Ayu became an uncontestable existence in the three realms, and all the real truth came to light only after her death...
Concept: Between humans, gods and monsters, the choice between love, family and friendship before hatred.