It tells the story of Yu Xingchen, the daughter of a federal major general, who disguises herself as a man and takes her brother's place to enter the Imperial Military Academy to track down the truth after her father is killed. She deals with rigorous training, identity crisis, and royal intrigues. She goes from hostility to cooperation with the cold Crown Prince Qin Yao, and jointly uncovers a technological conspiracy involving the two major forces. At the same time, she faces the double test of her inner emotions and her family's mission.
