During the Republic of China period, warlords were in power. Lin Hangjing, a talented girl, was imprisoned because her father was murdered. She went to live with her father's friend, Marshal Xiao. Although she lived under someone else's roof, she was neither humble nor overbearing. Xiao Beichen, the overbearing third son of the Xiao family, bullied her at first, but gradually became attracted by her strong independence. Marshal Xiao sent his son to study at the military academy to train him. Aunt Qi promised to match him with Hangjing after he graduated. After five years of hard work and strict training by the instructors, Xiao Beichen, who had experienced the life and death of the war, grew from a devil to an iron-blooded soldier. After returning from school, he helped his father to clean up the army while wanting to propose to Lin Hangjing, but unexpectedly learned that she had fallen in love with the passionate young man Mu Zizheng. Because Lin's father was suddenly in danger, Xiao Beichen and Lin Hangjing agreed to get married to save Lin's father. After marriage, the two experienced various hardships, from alienation to gradual affection, but due to misunderstanding, Hangjing disappeared in a fire. After seven years of separation, the Anti-Japanese War broke out. Lin Hangjing, who had joined a patriotic organization, returned to Beixin City to persuade Xiao Beichen to unite against Japan. Muzi became a lackey of the Japanese because of his mother's illness and repeatedly harmed Xiao Beichen. Hangjing followed Xiao Beichen to his death. In the end, the two resolved their misunderstandings, confirmed their true feelings in the flames of war, and worked together to protect their homeland.