During her graduation from Southwest Associated University, Zheng Ruping was selected by the Military Statistics Bureau (MSB) to attend their special training program. Her mission was to infiltrate the notorious No. 76 organization and assassinate its agent, Ding Mocun. After undergoing rigorous MSB training, which included techniques involving handcuffs, ropes, the tiger bench, and suspension, they were then subjected to further trials, thrown into prison as genuine convicts. Ultimately, Zheng Ruping, Li Fangfei, Wang Rui, and Lan Xiaoying emerged as the top four. They formed the MSB's "Iron Blood Female Assassination Squad." Their adversaries were the Japanese forces and the agents of No. 76, a dual threat. Following several successful assassinations, their final mission ended in complete annihilation, and they were successively executed by firing squad at the No. 76 execution grounds.

This story recounts the tale of Liang Hongyu, a courtesan from Jiangnan, who joined the army during the Jingkang Incident in the Great Song Dynasty and led the Song forces against the Jurchen invaders. As a heroic woman, Liang Hongyu has been commemorated for generations. However, her life was also accompanied by various rumors and slanders. She faced numerous hardships, was imprisoned multiple times, subjected to bondage and humiliation, and even teetered on the brink of death...