Chief medical examiner Sun Ying firmly believes that corpses never lie.
Until she encountered a perfect secret: student Chen Yu died mysteriously on campus. There was no trace at the scene and the cause of death remained a mystery. A tiny strand of pollen and a hidden bleeding point allowed her to tear away the pretense of "natural death".
The blade to solve the case points to the unsolved case of his father that has been lying dormant for ten years.
The bizarre murder weapon in the bloody clinic, the "voluntarily" withered old man in the Sunset Sanatorium, the "life assessment" algorithm running anonymously on the Internet... Seemingly unrelated crimes, interlocking like chains, dragged her into a dark abyss called "Ghostlight Freemasonry".
They regard themselves as the "optimizers" of life and replace moral laws with precise calculations.
When the truth about her loved ones and the twisted "justice" were placed in front of the autopsy table at the same time, Sun Ying clenched the knife in her hand.
This time, she wants to speak out for the silent bones and open up the rotten human heart beneath the perfect crime.