From the moment the apes set foot on the earth, it seems that the outcome of becoming the primate of all things—human beings—is determined. Humans also often regard themselves as the primates of all things. Of course, humans undoubtedly have many advantages over other species. However, there are many wonders in the world. The power of nature has given birth to countless wonderful things, among which "spirits" are the most mysterious. They have no form of their own, so they often use spiritual power to transform into human forms or animals and plants. However, they themselves are still in a state of nothingness and are not afraid of water and fire. They yearn for the prosperous and colorful life of the human world, so there are always spirits that disturb the human world, and humans, as the primates of all things, will not allow them to break the order, so the spirit killers were born.