Seventeen-year-old Shen Qingci is the legitimate daughter of the general Shen family. She has practiced martial arts since she was a child and has excellent swordsmanship. A marriage decree promised her to Zhao Mingyuan, a famous dandy from the south of the Yangtze River. Unwilling to be manipulated by fate, she disguised herself as a man and went with the army when her father was marching north. On the battlefield in northern Xinjiang, she repeatedly performed extraordinary feats with her extraordinary martial arts and resourcefulness, and became famous as "Little General Shen". After returning to the court in triumph, he thought that his meritorious service would bring him freedom, but instead he was offered a marriage to Xiao Yu, the frail and sickly prince of Jingnan. Faced with a new engagement and the undercurrent of the court, Shen Qingci gradually found herself trapped in a huge whirlpool of intrigue, and her "accidental" success on the battlefield did not seem to be as simple as it seemed...
