Beiyi employed a tactic to attack Baicheng, a significant town on the northern border of the Daqi Kingdom. Despite Tang Yao's valiant efforts as Baicheng's guard, his outnumbered people perished, save for his second daughter, Tang Ying. What causes Tang Ying the most outrage is that her father gave his life for the country, only to be accused of treason. To assume her father's role, Tang Ying ventured to the capital, discovering that it was far from easy.