Su Qing, the ace forensic doctor of the 21st century, traveled to the Yong Dynasty after the explosion and became the daughter of a lowly widow. As soon as she woke up, she was framed for having an affair with a corpse and killing the scholar Zhang Hao. At a critical moment, she bound to the "Forensic Divination System" and relied on her professional forensic knowledge to overturn the conclusion of suicide, expose the conspiracy to frame the crime, and clear her own suspicions, starting from details such as body wounds and skin flakes. During this period, she met the powerful Prince Jing Xiao Jue and reached a cooperation. With the help of the system and superb autopsy skills, she repeatedly solved strange cases, exposed the conspiracy of the "Golden Faced Bodhisattva" mysterious organization, and was also involved in the old case of the drowning of the crown prince three years ago. During the investigation, she discovered that the original owner's life experience was related to the mysterious organization "Ghost Guard", and she was caught in the whirlpool of the royal power struggle. She joined hands with Xiao Jue to explore the truth in a crisis-ridden situation, and adhere to the bottom line of forensic medicine and justice.