Once Upon a Time in Lingjian Mountain.

Wang Lu, a young genius, joins the renowned Spirit Blade Sect during a time of looming crisis across the nine continents. Under the guidance of his eccentric and sharp-tongued mentor Wang Wu, who hides centuries of wisdom behind a youthful appearance, he embarks on an unconventional path to immortal cultivation. Through constant clashes and unlikely camaraderie, the two strive to become the strongest sages of their time.