3000 years after the boy-god Nezha conquers the Dragon King then disappears in mythological times, he returns as an ordinary man to find his own path to becoming a true hero.

Fifteen hundred years after the war of gods, the heaven declined. Yang Jian, the God of Erlang, made a living by working as a catcher. One day, Yang Jian was ordered to hunt down a young man, his own nephew.