Jiang Bao Ning, the princess of Jianan County, grows up in the palace since childhood. She remains carefree despite knowing that there is no freedom within the palace walls and does not want to be used as a puppet. Thus, relying on her own ingenuity, she resists the fate of becoming a tool in the inner palace fighting. Li Qian, a guard of the Imperial Army, wants to understand the truth behind some events many years ago. He works hard to seek a higher position in the palace, just to get relevant clues.