The story revolves around Lin Mo, a top modern female special forces soldier, who travels to the fictional Republic of China. Her soul was transformed into Shen Qingwu, the concubine of the Shen family, a wealthy businessman in Shanghai. As soon as she landed, her family was wiped out, but she was the only one who survived. Lin Mo, who was burdened with a bloody feud, relied on the fighting skills, tactical thinking of modern special forces, and the golden finger of his own "battlefield insight system" to transform into a "killer" who frightened the Japanese invaders and traitors, stirring up the storm in the whirlpool of the anti-Japanese espionage war. She traveled among many forces, unlocking multiple layers of vests such as "cold student", "black market broker", and "military ace". While tracking down the real murderer of the family, she hunted the invaders with iron-blooded methods. In the end, she grew from a lone wolf bent on revenge to a sharp anti-Japanese sword that protects her family and country.
