Ming Shu, the daughter of the Taifu, enters the palace as a promise, but because half a blood-stained jade pendant is involved in an old case in the cold palace, she struggles to survive in palace battles, past dynasties, and the mystery of her life experience. She uses medical skills as a blade and wisdom as a shield to find a way to "win without fighting" in the embers of the bloody palace wall - only to find that what she has to fight against is never a certain person, but the cannibal "rules" themselves.