A story that follows Han Yuanniang, the eldest daughter of a minister who disguises herself as a man in order to pretend to be her twin brother. She encounters the prince thus igniting an unexpected romance. The eldest son of the Dingguo minister passed away at a young age. In order to stabilize the military and ensure that the Han family army in the Northern borders will not succumb to the imperial court, the minister’s eldest daughter Han Yuanniang takes her twin brother’s place as the young master Han Shiyi. She intentionally creates the image of a playboy for Han Shiyi, but inadvertently becomes the aide of the 5th prince Chen Yanyi. Being stationed in the prince’s camp, Han Shiyi becomes embroiled in the 5th prince’s plans to take the throne all while trying to keep her real identity a secret.