Suddenly, many people who had not yet expired were killed in the mortal world. Their bodies were missing and could not return to the sun. The underworld was full of ghosts and the whole underworld was busy. King Yama was caught slacking off and revealed his true form, so he was kicked down to the mortal world to investigate the truth. During the investigation, all kinds of demons and monsters appeared. As the fog gradually cleared, a war between good and evil in the three realms was about to begin.