In the North China base area in 1940, Orion Zhao Qingmei was familiar with the terrain and helped the Eighth Route Army pass on intelligence. Reconnaissance platoon leader Li Jianjun was ordered to cooperate with her to investigate Japanese strongholds. Zhao Qingmei used hunting skills to help Li Jianjun avoid Japanese patrols, and Li Jianjun also taught her how to use firearms. The two teamed up to destroy the Japanese army's "mopping up" plan and protect the people in the base area.