1945年，抗日战争即将结束，日寇正做着最后的垂死挣扎。位于团城的狐牙峰山寨是土匪头子雷子枫的地盘，因地势险要，易守难攻，再加上他驭人有术，武器先进，所以能在乱世中偏安一隅，日军对其也无可奈何。这天，他正在为老母做寿，忽然听到激战声，遂循声而去从日军的包围圈中救出了上官于飞。上官于飞本是八路军特派员，此次是奉命和独立团团长刘建功一起来执行任务，不料被日军所困，幸而得雷子枫所救。日本运输机在狐牙峰坠毁，机上运载的高级密码机和密码本丢失，上官于飞和刘建功正是为此而来，在与日军的激战中刘建功不幸阵亡，而上官于飞被雷子枫安顿在狐牙峰山寨。峡口村的石敢当和爷爷在狩猎时偶然间捡到了密码机，受到日军追杀。日军为找回密码机和密码本，血洗峡口村……雷子枫本无意参与政治，但其母却被日军残忍杀害，忍无可忍的他终于和上官于飞联合起来，共同抗击日军…

In 1945, the Anti-Japanese War was coming to an end, and the Japanese invaders were making their last dying struggle. The Huyafeng Village in Tuancheng is the site of the bandit leader Lei Zifeng. Because of the dangerous terrain, easy to defend and difficult to attack, plus his skill at controlling people and advanced weapons, he is able to stay in a corner in troubled times. helpless. One day, he was celebrating his mother's birthday when he heard the sound of fierce fighting, so he followed the sound and rescued Shangguan Yu Fei from the encirclement of the Japanese army. Shangguan Yufei was originally a special commissioner of the Eighth Route Army. This time he was ordered to carry out the mission with Liu Jiangong, the head of the independent regiment. Unexpectedly, he was trapped by the Japanese army, but fortunately he was rescued by Lei Zifeng. The Japanese transport plane crashed on Fox Yafeng, and the high-level cipher machine and code books carried on the plane were lost. Shangguan Yufei and Liu Jiangong came here for this. Feng settles in Huya Peak cottage. Shi Gandang and his grandfather in Xiakou Village accidentally picked up a cipher machine while hunting, and were hunted down by the Japanese army. In order to retrieve the cipher machine and code book, the Japanese army bloodyly washed Xiakou Village... Lei Zifeng had no intention of participating in politics, but his mother was brutally murdered by the Japanese army. He couldn't bear it, and finally joined forces with Shangguan Yufei to fight against the Japanese army..