Plot synopsis: During the "September 18th" Incident, the Kuomintang withdrew from North China, and the senior Kuomintang officer Jin Ge died and returned to Dong'an City, trying to pick up his mother and his newlywed wife Liu Wenting. However, the Japanese army has entered the city, Liu Wenting was forced to kill himself, and Jin Ge was arrested. The underground workers of our party rescued Jin Ge, hoping that he could go to the base area and use his military knowledge to fight against the Eighth Route Army.