In order to avenge the blood of his mentor, Xiao Chen, the commander-in-chief of the Northern Territory and the "Undefeated Sword God", took off his armor and returned with his mentor's orphan (also his child bride) Su Qingxue, dived into the abyss, and returned to the imperial capital with surging undercurrents. On the surface, he is a "laid-back prince" who has restrained his sharp edges, making jokes and being cynical, but in fact, he is working hard at every step. With his unparalleled sword skills and superb ingenuity, he crushes the villains of the family, eradicates the gangsters, and outsmarts the powerful officials in the court. In the process of avenging his mentor, Xiao Chen accidentally uncovered a shocking conspiracy involving the change of imperial power and the supernatural organization "Heavenly Punishment" trying to subvert the empire. He gathered his old troops, united with Zhongliang, and in the turbulent political struggle and supernatural showdown, he finally cut through the shady curtain with one knife, cut off the mastermind behind the scenes, protected his family, country and loved ones, and climbed to the top of power.
