To keep her ailing father from serving in the Imperial Army, a fearless young woman disguises herself as a man and battles northern invaders in China.

Set in the Three Kingdoms period of Chinese history, the story focuses on Cao Cao in his old age, exploring the areas of military tactics, love, and the relationship between father and son.

A government department known as the Six Panels appoints their best officer to infiltrate a special force called the Divine Constabulary, to ensure their way in stopping the circulation of counterfeit coin currency in the capital.