Pei Xueqing, the daughter of an imperial physician, was forced to marry a frail prince, but she discovered that there was a terrifying conspiracy hidden behind the marriage. In the process of exploring the truth behind her father's death, she formed a life-and-death contract with Xiao Yunjian, the intelligence chief disguised as an idle prince. The two work together to solve the private coin minting case, discovering the power struggle under the Four Elephant official system, and even involving the palace secrets of the medicine man's experiment twenty years ago. When the twin Gu caused the fusion of memories, the identities of the orphans from the previous dynasty surfaced, and they had to make a choice between imperial power and the common people.
Concept: "Become a Phoenix" × "Game of Fate" × "Blood Redemption" × "The Doctor Kills the Heart"