The events of the series "Chang Ge Xing" take place in Ancient China during the reign of the Tang dynasty. The crown prince, Li Shimin, decides to seize power from his father by force, killing all of his brothers. He also eliminates their families, including women and children. However, one girl named Li Changge manages to escape. Disguised as a man, she joins the army of the Shuo province. The newly emerged "young man" achieves great success on the battlefield and quickly becomes a captain. Now, Changge wants to overthrow her uncle and seek revenge for the death of her loved ones.