After the war between gods and demons, the demon king was sealed and the gods of the divine realm withered. In order to prevent the demon king from attacking the divine realm again and provoking a war ten thousand years later, the emperor combined the power of the gods to seal the entrance to the divine realm. Some gods and men in the divine realm fell into the human world during the war and could no longer return to the divine realm.
Thousands of years later, the demon king gradually recovered his power and wanted to start a new war. The disciples of each immortal sect have experience in slaying demons...