Lin Ye, a 20-year-old vocational college student, is short on money but cautious, level-headed, and principled. He carries a family heirloom, a black wooden tablet that wards off evil, and can see Yin energy. An ordinary student, he stumbles into the shadow trade while trying to make money. He learns the rules, steels his nerves, and relies on the tablet to stay alive as he figures out how the trade works at the bottom and witnesses the darker side of human nature.
