Su Hexiang, the concubine of the "Tianxiang Pavilion", the top spice family in Jiangnan, is gifted with the ability to smell, identify people and objects, and perceive emotions. His mother died prematurely and left behind an incomplete recipe for making incense. In order to find out the cause of her mother's death, she cleverly used her perfume-making skills and her unique sense of smell to work step by step in the inner house where her aunt was in charge and her aunt was in charge. An accident brought her into contact with a secret letter containing a poisonous fragrance hidden in a secret compartment of her father's study, which led to a deadly conspiracy involving the palace and covered up by generations of fragrance recipes.
