Shen Qingtang carried the memories of her past life when she was reborn, returning to the night before her coming-of-age ceremony, when Aunt Liu had poisoned her to death. She unexpectedly activated the Poison Appraisal System, which could scan toxins and find antidotes, and unlocked a portable medicinal garden. Using the System, she exposed the poisoned bird’s nest and discovered that Aunt Liu was searching for a gold-inlaid jade button connected to her mother’s death.
She joined forces with her half-brother Mingxuan to fight Aunt Liu. While investigating Nanny Li’s poisoning, they discovered that licorice could counteract all poisons. Then, when the Begonia Blood Case took place, a drop of blood became red mist, unlocking a new ability in the Poison Appraisal System and gradually revealing the secrets hidden in the mansion. The mute old woman’s strange movements and a shadow eavesdropping outside the window both hinted at a deeper conspiracy. While planning her counterattack, Shen Qingtang continued to investigate the truth behind her mother’s death. Surrounded by deadly dangers at every turn in the Marquis’s mansion, she was determined to exact revenge and rewrite her fate.