Su He, who was once the descendant of the No. 1 Royal Fragrance Family, had his family destroyed overnight. Bearing a blood feud, he became anonymous and became an inconspicuous perfumer in the corner of the capital. She devoted herself to investigating the case, but unexpectedly met Xiao Jue, the God of War Prince who had been deposed and exiled and was poisoned by a strange poison. Her fragrance is the only antidote that can save his life; his power is the only step that can help her redress her injustice. The two began as contractual allies who tested and exploited each other. In the life-and-death crises of outsmarting traitors, solving mysteries, and resisting foreign enemies, they gradually surrendered their hearts and became each other's only salvation. In the end, Su He used incense as a blade to help Xiao Jue return to the top of power, clear up the family's grievances, and create a legend of using "incense" as medicine, food, and war, and became a generation of "Fragrance God". However, the once cold and powerful official bowed to her alone and allowed her to be favored for the rest of his life.