Chen Mo wakes up to find that he has transmigrated into the body of a fallen emperor, inheriting a complete disaster: the entire court has fled, and the imperial treasury is empty. Relying on modern knowledge, he gathers companions who have also transmigrated from another world, develops steelmaking, builds roads, revitalizes every industry, recruits talented people, and strengthens the army, gradually rebuilding the ruined dynasty. When Beishuo invades, he leads his troops in a counterattack and recovers lost territory. He then receives an ancestral inheritance of cultivation techniques in the imperial mausoleum and embarks on the path of immortal cultivation. Within the imperial harem, the aloof Gu Nian, the charming Su Wanqing, Consort Shen Qingci, female general Qin Qingluan, and grassland princess Tuoba Yue accompany him, each sharing a different romantic destiny. Under his leadership, spiritual energy returns to the dynasty, and an immortal dynasty begins to take shape. Meanwhile, the shadow of the upper realm is quietly drawing near.