On this vast land of the Central Plains, demons and humans live in the same space, but do not interfere with each other. Only a very small number of evil monsters or monsters who have lost themselves will come down to harm people, so a family of monster exterminators came to stop them. There are three major demon-killing families in the human world, the Li family in the south, the Huangfu family in the north, and the Bing family in the west. Correspondingly, there are three nobles in the demon world. The Huanyue clan regards women as noble and has pure royal blood but is ignorant of worldly affairs. As well as the aggressive Fierce Flame Tribe and the gentle Wind Spirit Tribe. The following is a story about a one-eyed demon slayer.