In October 1940, the Japanese army attack Longquan, the KMT head Gao Xiang was ordered to guard Longquan County. Gao Xiang and the Japanese fighting three days and three nights, and finally left only dozens of people, but the city did not let the Japanese captured a penny. But sent to support the high road of the Eighth Route Army Hu Tianhua late, eventually leading to Longquan fall. Gao Xiang and the rest of the soldiers came to Longya Mountain, met with the Japanese warfare leader Xu Peony. 1940年10月，日军大举进攻龙泉县，八路军团长高翔奉命守卫龙泉县。高翔和日军激战三天三夜，最后仅剩下数十人，但城池未让日军攻下一分一毫。然而派来支援高翔的国军胡天华部迟迟未到，最终导致龙泉失陷。高翔和剩下的战士们来到龙牙山，遇到了正和日军交战的女匪首徐牡丹。高翔、胡天华摒弃前嫌，联手作战，帮徐牡丹击退日军。高翔服从上级命令，留下来招安龙牙山土匪；而一心想杀敌雪恨的胡天华也留下来拉拢土匪武装为其卖命。两股势力为了争取土匪武装在龙牙山展开交锋。在历经诸多磨难后，徐牡丹对高翔青睐有加，胡天华也被足智多谋的高翔所折服，和土匪一起加入了八路军。在高翔的带领下，龙牙山的土匪被改造成抗日劲旅“龙牙抗日纵队”，最终消灭了以加藤一雄为首的龙泉日军。
