Once Wang Lin has reached the Ancient God Land, a new threat appears overnight in the Demon Cultivation Sea: the Eternal Night Demon City. Hungry for territory, it launches repeated assaults on neighboring sects, among them the Yuntian Sect, home of Li Muwan. While defending the sect's gate, she is poisoned and left close to death. Learning of her condition, Wang Lin carries her back into the Demon Cultivation Sea, where he clashes with the city's three lords and hunts for a cure. Saving her is only the start, as a scheme a thousand years in the making begins to come to light. This single-episode action fantasy film is built around cultivation battles and high adventure.