Li Changsheng, the founding patriarch of the Changsheng Sect who had been in a deep slumber for twenty thousand years, awakens one day to find his personal strength has already reached the pinnacle of the world. Returning to his declining sect, he saves his disciple Yang Xuanji, who is at the end of his tether, and meticulously cultivates younger generations such as Xiao Jue and Luo Qingxue. Facing the step-by-step oppression of forces like the Burning Heaven Gate and the Shenxu Gate, as well as the demonic Emperor Yun and his cohorts who are secretly capturing cultivators for sacrifice, Li steps in calmly to resolve the crises. Along the way, he befriends the friendly Liuyun Sect and the Jiang family, subdues the stray Nether Emperor to guard the mountain gate, protects the sect and all living beings along the journey, exposes the sacrificial conspiracy of the Undead Teaching, quietly awaits the opening of the immortal path, and writes a legend of longevity featuring gentle path-guarding and stable cultivation.