Xiao Tianyi transmigrates into Da Qian's Ninth Prince, sent to the frontline as military supervisor by Crown Prince Titus, who views him as a disposable pawn. He awakens the Supreme Martial God System, navigates the imperial court, forms a bond with Princess Eleanor Hale of Yanmen, foils the conspiracy between Crown Prince Titus and the Great Wu Dynasty, leads his troops, defeats the enemy force, and embarks on the Mount Langju Victory Ritual.