Lu Chen guarded the Heavenly Demon Tower for five hundred years, protecting the peace of the surrounding lands, only to be unjustly slandered and driven away. After he left, demonic calamity descended upon the world, and countless lives suffered. Various factions offered him high-ranking positions and generous rewards to win him over, while the Female Emperor of Northern Han treated him with genuine sincerity. Indifferent to power and status, Lu Chen remained devoted to the greater good and resolved to travel to Northern Han to eliminate the demons. Meanwhile, the stubborn court of Dongxuan remained oblivious to the impending crisis. By staying true to his principles and putting all living beings first, he found his own worth through the path of saving the world and upholding justice.