The female protagonist, Ye Wushuang, was once the Grand Marshal of the Xingtian Division, wielding immense power. However, for the sake of her sister, she chose to relinquish her authority and live in seclusion in the city. When the Japanese bring chaos to the borders of Daxia and establish the Black Mountain Society to cause trouble in the Jiangnan region, the current head of the Xingtian Division, Yu Luosha, invites Ye Wushuang to return to action......