After transmigrating into the body of a frail scholar, Li Jun lives with his widowed sister-in-law, relying on each other for survival. On a stormy night, a single remark from him enlightens a black flood dragon, allowing it to transform into a true dragon. In return, he receives an ancient divine martial art! But his mortal body is too weak to cultivate. Fortunately, he awakens an extraordinary cheat ability: he can devour the flesh and blood of demons to level up without limits! When his wicked relatives plot to seize his family's property, they are swallowed by a giant serpent passing by. Li Jun then turns around and slays the serpent, converting it into cultivation energy! Devouring demon flesh and comprehending sword intent, he brutally crushes the greedy Black Tiger Guards and repels a shapeshifting ancient demon far above his level. At the decisive battle in the Dead City of Qingshan, he faces the seventh-realm Demon Fox King, whose power overwhelms every expert present. Li Jun unleashes his supreme sword intent and cuts the seventh-realm great demon in half with a single strike! After the battle, he intimidates all the other cultivators, claims the Demon King's inner core for himself, and forcefully breaks through to the seventh realm, becoming an unparalleled legend!