She is the dark and ruthless ghost doctor of the night, who one day finds herself transported to a world where she becomes a despised and scorned waste of a woman. With a contract with an ancient divine beast and the cultivation of heaven-defying divine techniques, she dazzles everyone. With poison pills and toxins in hand, anyone who dares to bully her is courting death! What's the big deal about ninth-grade elixirs? Her cute pets treat them like candy. Being able to refine medicines, that's just how capricious she is! He is the gorgeously alluring Night Prince, whom everyone thinks is cold and heartless, but why does he seem so persistent and unrelenting in her eyes? 'Why are you staring at me?' 'This prince is thinking about when you will officially become this prince's woman.' A fine needle presses against his waist, and she smiles, 'Sir, impulsiveness is the devil, this medicine agent...'