A modern corporate worker transmigrates, reduced to Lin Wushuang, the Prince of Zhenbei infatuated with the Empress. Wary of his three hundred thousand iron cavalry in the northern frontier, the Empress issues an imperial decree recalling him to cut weeds and eliminate roots. After sobering up, Lin Wushuang furiously slaughters the imperial decree-delivering eunuch, raising troops to march south, with all prefectures and counties along the way surrendering completely. Upon entering the capital, he ruthlessly liquidates the imperial clan and aristocratic families, reforms the tax system and imperial examinations, personally campaigns to crush the Northern Rong external enemies, places the Empress under house arrest and hollows out her power, single-handedly sweeps away a century of chronic bureaucratic ills, lightens corvée and taxes while promoting humble scholars, and creates a peaceful and prosperous era with mighty troops and the people's hearts.