Fox Jiujiu, the princess of the demon world, is lively and naughty. In order to avoid marriage, she sneaks out of the demon world, but on the way she encounters Xiao Che, the god of war in the heaven. Xiao Che was ordered to capture the fallen immortal who escaped from heaven, and mistakenly regarded Hu Jiujiu as an accomplice of the fallen immortal. The two had never known each other before. In the process of jointly tracing the traces of the fallen immortal, Xiao Che discovered Hu Jiujiu's kindness and innocence, and Hu Jiujiu was also attracted by Xiao Che's integrity and responsibility. However, immortals and monsters have different paths, and the two worlds have long-standing grudges. Their relationship is opposed by both the heaven world and the demon world. In the end, the two resolved the conflicts between the two worlds with their sincerity, joined hands to fight against the fallen immortals, and became witnesses of the peace between immortals and demons.
