A meteor shower that appeared out of thin air brought a devastating blow to mankind. All kinds of creatures have undergone horrific mutations. Various creatures that only existed in myths have appeared one after another. Humanity has fallen from the top of the food chain. Races from other worlds want to occupy the earth. Where will mankind go? In order to survive, mankind has opened an era of coexistence of cultivation and technology. Is it the end of the world or a golden age?