Lying dormant in the earth veins for one hundred thousand years, Chu Xuan finally waited for the Longevity Sign-In System, only to be accidentally awakened by Mu Qinghan, the Master of the Tianlan Sect. Originally coming to resolve hidden dangers within the sect, she unexpectedly discovered that the casual and mysterious expert before her was none other than the legendary Grand Supreme Ancestor of the sect. Facing the sect's crisis, Chu Xuan stepped forth to repair the grand formation and guide their cultivation, joining hands with Mu Qinghan to protect the disciples and reuniting with old friends by following the clues of the past. A comical and bizarre encounter makes the aloof sect master re-examine the history of the sect, and also allows Chu Xuan, who has experienced a long and desolate solitude, to find the warmth of home amidst the lights of thousands of households.