Modern forensic doctor Fang Zheng dies while protecting a corpse and awakens in the body of Nie Jinxuan, the notorious Princess Consort of Prince Chen Yin Fengzhan in the ancient Eastern Ling Kingdom. Accused of murdering a man found dead in her chambers, she must use her scientific knowledge to uncover the truth amidst palace intrigue, jealous concubines, and political scheming. As she navigates the rigid hierarchy of the imperial court, Fang Zheng hides her modern abilities while gathering evidence, performing autopsies, and deducing motives that elude the traditional investigators.

Her sharp mind and determination earn both allies and enemies, as she strives to clear her name and protect the corpse that brought her here. Along the way, she uncovers deeper conspiracies threatening the prince’s fiefdom and discovers unexpected feelings amid the danger. The story blends historical romance, mystery, and detective work, presenting a strong, clever heroine who applies modern forensic techniques to solve crimes in a bygone era.