In the ancient "Immortal City" where immortals meet the mortal world, the mausoleum guardian Miaoshui Po uses the name "Spicy Little Overlord" to guard the Guixu Mausoleum, which contains the secret treasure of heaven. The third prince of heaven, Zhuang Dahou, disguised himself as a low-level immortal official "Xiaohou" and descended to earth in order to retrieve the fairy soul beads left behind by his lover in his previous life (Miaoshuipo's previous life). However, he was exposed on the spot by Miaoshuipo for pretending to be too innocent. Starting from the quarrel of "debunk and counter-debunk", the two got involved in the conspiracy of the remnants of the demon world to seize the Immortal Soul Pearl. Miao Shuipan resolves the crisis with her fierce personality, while Zhuang Dahou secretly helps her while pretending to be innocent. In the process, a strong contrast is revealed, and the relationship between the two becomes increasingly subtle. In the end, they teamed up to defeat the Demon Realm. Zhuang Dahou gave up his identity as a heaven and guarded the fairy city with Miaoshui Po, becoming the legend of "the most ferocious tomb-keeper in the fairy city" and "the best at pretending to be a pure fairy".
