In the corner where neon lights and shadows intertwine in Yunhai City, Jiang Linyuan, the owner of the "Midnight Convenience Store", was involved in a supernatural mystery that spanned twenty years because of a blood-stained ghost coin. On the fifteenth day of every month, the netherworld rift that appears in the city overflows with strange spiritual energy. The Taotie tattoo on his right arm and his special ability to recall the memory of death make him the key to the battle between the Night Watch Dark Network and the mysterious organization "Yinshan Ji". Joining hands with Shen Zhaoxue, a descendant of a family of forensic doctors, and Lao Lu, a leader in the underworld, they gradually uncover the ultimate secrets of the Underworld Inn and the Taotie bloodline while solving bizarre incidents such as the female corpse in red and the mysterious shadow in the hospital. Little do they know that a larger conspiracy is dormant on the other side of the rift in the netherworld.
