Ye Fan transmigrates into a world of immortal cultivation, mistakenly believing himself to be a useless good-for-nothing who cannot cultivate. He lives a quiet life in a secluded courtyard, raising chickens and feeding fish. Unbeknownst to him, he possesses the Origin of Chaos and an invincible divine aura, while the chickens, ducks, and fish in his courtyard are all divine beasts, and even his food, drinks, and tea contain supreme power. To complete his system's mission to eradicate the Hehuan Sect, he inadvertently guides the sect master of the Heavenly Dao Sect to a breakthrough and is revered as the Supreme Grand Offering Elder. As he ventures into secret realms across the land, he effortlessly crushes formidable foes. When the Heavenly Demon catastrophe strikes, Ye Fan reveals his true form as the Origin of Chaos spanning the heavens, annihilates the demon race with a wave of his hand, and ascends to the highest throne across the heavens. In the end, he lays aside his illustrious reputation and returns to his little courtyard, once again embracing an ordinary life.