خلاصه داستان : وو ژن ، خواهر ملکه ، دختر دوک هنان ، بزرگ شد. او پس از نجات توسط استاد گربه خود ، قدرت شیطان را به ارث برد. مه ژو یو ، همچنین با روحیه ، آموزش دیده در تائوئیسم از جوان ، تسلط بر قدرتهای معنوی.

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.