Qin Zhaoning is the daughter of a general. She grew up in the border area with her father and brother since she was a child. She is skilled in bow and horse and has a bold personality. After his father died in the war, his elder brother Qin Zhaoyuan inherited the title, but was killed by an adulterer and imprisoned for collaborating with the enemy. In order to save her brother, Qin Zhaoning disguised herself as a man and went to the border in his name, taking over his father's old department. No one in the military camp believed that this "little pretty face" could lead troops to fight, and deputy general Jiang Chen was against her at every turn. Qin Zhaoning proved herself in actual battles. She set up ambushes to defeat enemy troops, improved grain and grass transportation routes, and conquered border tribes, gradually winning the support of the soldiers. Jiang Chen also went from suspicion to admiration, and then to heartbreak. When he discovered that Qin Zhaoning's daughter was pregnant, he couldn't help himself. The two fought side by side and made many military exploits, but the news coming from the capital was getting worse and worse - the elder brother was sentenced to execution, and the new coach was coming to take over the military power. Qin Zhaoning made a bold decision: he led three thousand cavalry back to Beijing to rob the execution site overnight. This move shocked the government and the public, and the emperor was furious and wanted to punish her for treason, but countless people and soldiers jointly petitioned for her life. In the end, the emperor had to acknowledge her contribution and pardoned her and her brother's death penalty. Qin Zhaoning refused the emperor's reward and only wanted a piece of border land, where she built her own city and guarded the land she had bought with her blood together with Jiang Chen.