Lin Yan was fired from the system and banned from the industry because of a serial skinning case that could not be explained scientifically and for insisting on supernatural traces in the autopsy report. He opened a trace identification studio to make a living, but was involved in the whirlpool of the supernatural world. He gradually discovered the mysterious organization "The Death Division" that spanned Yin and Yang behind the skinning case, and his own life experience - the legitimate daughter of the Nanmao Lin family and the son of a defected disciple of the Beima family. Lin Yan used forensic logic to break the situation and used ruthless means to clear obstacles. He traveled all over the country to crack the "Ten Thousand Souls and Dragon Suppression Bureau" set up by the Dushu Division, and fought against the century-old grudges between Nan Mao and Bei Ma. Finally, he overturned the Dushu's conspiracy, balanced the order of Yin and Yang, and became the only "judge to eliminate delusion" in the underworld.
