At the beginning of the world, Nuwa created humans. With the emergence of humans, rare and exotic animals, demons and ghosts appeared. Demons and beasts are naturally stronger than humans, and some evil-minded demons and beasts take pleasure in killing people. In order to protect humans, immortals from all walks of life distribute their immortal power to kind people to fight against demons and beasts. Their immortal power can be passed down from generation to generation. People with immortal power are called ramming people.