In the Great Xia Imperial Palace, Northern Man forces are pressing at the border, the emperor is in a coma, and Prime Minister Zhao Fu is forcing the Eldest Princess Chu Zhaohuang to go on a peace-seeking marriage alliance. The seemingly weak Chu Zhaohuang tears up the marriage imperial edict in public, reveals formidable martial arts, obtains the military tally, and activates the National Fortune Martial Dao System. She forms the Coffin-Carrying Army, slaughters the traitors in the imperial court, subdues generals such as Lei Wanjun, and rushes to the northern border. Along the way, she breaks through ambushes, confronts the enemy-colluding Prefect of Jubei City Li Deyuan, skillfully uses an ambush to heavily defeat the Man tribe army, slaughters the Left Sage King, and guards the national gate well. Chu Zhaohuang dons armor and goes to battle as a woman, refuses the humiliating marriage alliance, and protects the people of Great Xia with her saber and sword.