Modern forensic pathologist Lin Wei is struck by a mysterious current at the autopsy table and transmigrates into Shen Lanxi, a mute daughter of a concubine in the Jing'an Marquis household. Within three days, she will be falsely accused of having caused her legitimate elder brother’s death and sentenced to drink poisoned wine. Her predecessor’s dying wish is to protect the three-month-old child in her womb. Her link to the modern world is a bronze key her mother pressed into her hand on her deathbed, which corresponds to a manuscript of the Poison Manual hidden in the ancestral shrine’s secret chamber.
