Xu Kai
Mei Zhuyu


Mei Zhuyu, a calm and reserved nobleman from a lesser branch of the Mei family, arrives in Chang'an as an official at the Bureau of Mystic Investigations. During a banquet, he meets Wu Zhen, the bold and unruly younger sister of the Empress and secret Guardian of the Demon Underworld. Both hide their true identities. Wu, a half-demon striving to keep peace, and Mei, a skilled demon slayer, seek the truth behind the fire 18 years ago. As bone demons rise and unrest grows, they fight side by side, forming a bond that deepens into love until the Changxi Palace launches a purge, forcing them to face each other's secrets and the past they share.
Cat Lord Wu Zhen traps a demon while Mei Zhuyu exposes his priesthood—their paths cross again.
Wu Zhen seizes the Female Bat and learns its loss of sanity is tied to the cursed Bone Relic.
At the banquet, Mei and Wu expose Xie Loubai's lantern trick, trapping the Shadow Demon.
Discovering the Bone Relic in Mei Zhuyu's possession, Wu Zhen prepares to steal it.
Wu fails to break the bone. Elder Hui colludes with Shan Posuo; Wu and Mei search the Hills.
Ling Xiao and Wu Zi Shu expose Elder Hui's plot, while Mei Zhuyu and Wu Zi Shu destroy Shan Posuo.
Mei Zhuyu returns to petition for the Bureau Chief position. Hu Zhu tests Shuang Jiang's identity.
Hu Zhu and Shuang Jiang confront a demon while Mei and Wu Zhen discover odd camellias in the palace.
Mei and Wu investigate a case of spirit-princess while Elder Hui conspires with Xuan Hui.
Xuan Hui attacks the city. Mei is injured protecting Wu Zhen. Liu defeats the demon.
Wu Zhen confirms Xuan Hui's attack and heals Mei Zhuyu. Mei gradually develops feelings for her.
Wu Zhen defeats Elder Hui in the Demon Underworld by using Cat Lord powers in the mortal duel.
Wu Zhen repairs the Demon Underworld's barrier, unknowingly clashing with Mei in disguise.
Mei moves out of the Wu residence, encounters bandits, and falls victim to Pei Jiya's poisoning.
Mei stays in Chang'an to investigate Pei while Wu Zhen joins the Scented Duel with others.
Anbilo kills for incense. Mei's rescue of Wu Zhen reveals his secret abilities, making Pei doubt.
Mei Si accidentally summons ink demons that Mei Zhuyu destroys, while Wu Zhen discovers Xuan Hui.
When Pei Jiya proposes to Wu Zhen, Mei becomes suspicious and discovers his dark practices.
At Lin'an River, Pei's exposed identity traps Wu Zhen and Mei Zhuyu in a deadly choice.
Mei Zhu Yu and Wu Zhen are caught in the formation. After confessing his love to Wu Zhen, Mei Zhu Yu pushes her out of the stalagmite formation, while he plummets to the depth below.