Khương Trường Sinh was born as the first Prince of the Canh dynasty, but was kidnapped at birth by wicked men and raised as an ordinary warrior in a secret compound. Living with no one to turn to, he has the good fortune of discovering a system that grants him infinite... life as long as he survives the challenges that life brings.

He narrowly survives his masters deadly training, and is rewarded with the Thần Ảnh thối artifact; he brushes with death from a natural disaster, but is blessed to obtain the Cửu Tầm Thiên Long Bộ; and he overcomes the chaos of the Kinh Thành city and gets his hands on the powerful Hàng Ma artifact.

In a world without gods or magic, where martial arts reigns supreme and the art of the Dao is kept hidden amidst the mountains and forests, Khương Trường Sinh rises to power, crushing enemies and stabilizing the empire. However, three hundred years later, the once-prosperous dynasty is faltering, plagued by infighting and weakened by external threats. The people suffer in misery and despair, and it falls upon Khương Huyền Chân—the heir and a descendant of Khương Trường Sinh—to save the empire and continue the legacy of his ancestor.

As Khương Huyền Chân leaves for the secret compound, the Emperor falls to his knees begging for forgiveness, ashamed of his past mistakes and powerless to turn the tides of his fading empire. "Please, descendant of mine, I beg of you to take up the mantle of your great ancestor and continue the Cảnh dynastys legacy for another 300 years!"