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.

A genius girl and her childhood sweetheart navigate life's challenges from campus to marriage in this heartwarming coming-of-age story filled with wit, warmth and youthful passion.

Gu Qingzhi, seule survivante d'une famille massacrée, revient du nord-ouest sous les traits de la princesse Shen Xihe. Autrefois fière « rose des frontières », elle est désormais devenue une souveraine froide et impitoyable, déterminée à prendre son destin en main. Aux côtés du prince héritier Xiao Huayong, un homme perspicace et stratège qui dissimule sa véritable puissance, ils naviguent dans les méandres des intrigues politiques et s'élèvent ensemble au pouvoir.