The story takes place in 1916. Qian Baobao (Chen Qiaoen) is an ordinary girl whose mother is seriously ill. In order to save her mother, she replaced the identity of the deceased female doctor Xiao Han and came to Longcheng Military Academy to become an instructor. Before long, Xiao Han's fiancé Shen Wentao (Huang Zongze) began to doubt Qian Baobao's true identity. At the same time, a man named Xiang Hao (Jia Nailiang) also launched a passionate offensive against Qian Baobao. Qian Baobao was caught between the two men and couldn't make a choice. At this juncture, Xiao Han appeared. It turned out that she was not dead, which made Qian Baobao's conscience suffer. The Japanese underworld forces targeted the Longcheng Military Academy. Faced with constant harassment and provocation, Qian Baobao must be strong and lead the passionate men under his command to fight to the end.