When he was eight, Lu Chen watched his father get swallowed by a fire. No body was found in the ruins, and the mystery became an obsession. Fascinated by old books of the strange and supernatural, he felt an inexplicable familiarity with their contents and became convinced that there was more to his father’s death. He enrolled at Xijing Police Academy, then settled in Shangjiang with his journalist girlfriend, Su Wan, after graduating, where he became a criminal investigator.
In his first month on rotation, he encountered a bizarre murder. The victim had no external injuries, yet his face was blue-black, and the sickly-sweet smell at the scene matched the one at the fire years ago. More strange murders followed. Lu Chen began seeing monsters from Journey to the West and the Classic of Mountains and Seas, and realized he had the ability to see demons. An old file discovered by his girlfriend overlapped with the demon cases, and clues to his father’s death began to emerge. From then on, he was drawn into the conflict between humans and demons, and he himself was the key to it all.