When forensic doctor Lin Xia dissected the body of an unknown woman, she discovered that the deceased had the same crescent-shaped birthmark on the inside of her wrist. What's even more bizarre is that the ginkgo leaf specimens left in the deceased's stomach are exactly the same as those left by her mother who has been missing for many years.
As the investigation deepens, Lin Xia discovers that the deceased is actually the illegitimate daughter of the wealthy Gu family in the city. The Gu family has been experiencing an undercurrent recently - the powerful man, Mr. Gu, is critically ill, and the children are fighting for the inheritance. Lin Xia followed the clues, but encountered anonymous threats and accidents one after another, and even discovered that her mother's disappearance was inextricably linked to the Gu family.
With the assistance of detective Lu Chuan, Lin Xia unearthed subtle autopsy clues and dusty old files. Every time a mystery is solved, it brings her one step closer to the truth, but also puts her into deeper danger. When all the evidence pointed to the most unlikely person in the Gu family, she had to face a cruel fact: behind this murder, there were grievances and redemption that spanned twenty years.
