During the 20th century in Shanghai, China, despite the ban on jiangshi, criminal organizations took advantage of this situation by operating businesses involving corpses. Lei lost his family, including his own body being turned into a jiangshi. He then encountered Mei Lan, a Taoist who fought against crimes related to jiangshi. Along with his unusual companion, Lei aimed to free all jiangshi from their curse and bury Hei Xu, the dark Taoist responsible for this curse.