Lu Yan suffered a nervous breakdown after witnessing the sudden death of a witness in court, and has been living in hallucinations and bloody memories ever since. Everyone said he was crazy, but Jiang Zheye knew that the testimony in that trial contained enough poison to tear the entire judicial system apart. When ghosts in the police station secretly eliminate witnesses, and when court files are mysteriously burned, Lu Mian's ravings become the only clue. Jiang Zheye stepped on the corpses to get closer to the truth, and Lu Mian's madness was the only untainted testimony. One of them whispers in the abyss, and the other wields a sword in the light. Who is the real madman? When the last testimony is etched into the bones, they must join forces to drag the entire system into hell.