Shen Qingdai, the daughter of a convict from the imperial hospital, was brought into the palace of the Jin Dynasty as the lowest concubine because her father was involved in a turmoil in the court and the whole family was convicted. In the deep palace of the palace, all forces are intertwined. The princess is dignified but fierce in her methods, and the side concubine is charming and murderous. Shen Qingdai has nothing but the medical skills she learned from her father and a mind that becomes clearer in desperate situations. She originally wanted to hide her weakness and protect herself and survive in a low-key manner, but due to an accidental "pulse diagnosis", she was involved in the whirlpool of the innermost struggle in the palace. From then on, the silver needles and herbs in her hands became the only weapons to fight for her own survival in this man-eating house.