The supernatural is resurging across the globe, and Yin energy is spilling into the world. Haunted houses, vengeful ghosts, century-old demons, and ancient evil spirits are appearing everywhere. Human martial artists and the Special Investigation Bureau are struggling to keep them under control, but evil spirits keep breaking through their seals. Cities are falling, and the order of human society is on the brink of collapse. The passage to the underworld has been shattered, and the underworld's officers are nowhere to be found. Countless souls are stranded in the living world and turn into evil spirits. The protagonist binds himself to a damaged Underworld Authority System and becomes a temporary King of Hell in the human realm. Wielding the powers of the underworld, he uses its laws to suppress every ghost in the world.
