Chen Yantian, a restorer of ancient books born with yin eyes, is accidentally drawn into a dungeon world of shadow ruins teeming with evil spirits. Abandoned buildings, deserted village shrines, red coffins and ghost weddings, paper figures borrowing souls: Chinese folk horror closes in at every turn. He uses his wits to break through each trap and reason to dispel resentment, fighting for survival alongside his companions. As they delve deeper into the dungeons, old grievances, secrets of the mystic arts, and the source of ten thousand souls come to light one after another. When resentment finds its place and yin and yang return to order, Chen Yantian finally understands that the most terrifying thing is not ghosts, but the malice people cannot bury and the pain they cannot let go of.
