Donghuang Taiyi and the Nine-tailed Sky Fox were originally the supreme gods and spirit foxes in the heaven, but because of a forbidden love, they offended Tian Tiao and were punished to endure nine lifetimes of love tribulation. In each life, they were either childhood sweethearts, lovers in an enemy country, or monsters with different paths, falling in love but finding it difficult to stay together. It wasn't until the ninth life that he became Chen Changsheng, the Xiaoqi of the Demon Suppression Department, and she turned into the fox demon Hong Yu, and the two met again.
However, there is a bigger conspiracy hidden behind this reunion. The fragments of the Chaos Clock are scattered across the three realms, and the dark forces are ready to move and attempt to devour the universe. After regaining their memories, Donghuang Taiyi and Nine-tailed Sky Fox discovered that they were not only the protagonists of the Nine Worlds Love Tribulation, but also the key to saving the Three Realms.
From the human world to the heaven, from the demon world to the parallel universe, they work together to uncover the secret of the Chaos Clock, fight against the conspiracy of the Chaos Demon Lord, and finally use love as the power to seal the black hole that swallows the universe.
