When all the witnesses collectively recanted their confessions, Li Feng tore up the autopsy report in court and shouted, "You are all poisoned" - no one believed him. But forensic doctor Shen Zhuo discovered that the toxin data in the report was completely consistent with her father's death ten years ago. The prosecutor Huo Yan, the psychological consultant Zhou Entropy, and the undertaker Chen Ya all hide fatal secrets. They are not betraying, they are controlled by poison. The truth is hidden in the blood of every corpse.
