During the Anti Japanese war in 1943, the Jiaodong Peninsula in Haiyang with eight people's army launched the war behind enemy lines. Villagers Zhao Hualong ground of a strange combination of circumstances destroy the Japanese Koro Koizumi design plot, rescued according to send to develop guerrilla team Li Guoqiang. Zhao Hualong's outstanding performance made him to be sent to the military area specialized in the study of technology. Learning back Zhao Hualong menace, according to every battle experience. In the combat of the invention of different mines, creating one elusive in the mines of the battlefield, deep fried the enemy tremble with fear, Zhao Hualong also in war tempered growth and strong. Koizumi took pains to be invited in demining experts Inoue, and Zhao Hualong battle of wits; command sent to the chemistry expert Wang Xia assist Zhao Hualong deal with well. Few Japanese repulse guerrillas, Zhao Hualong lessons learned, with the help of Wang Xia, continuous improvement of mine technology, make well at the end of one's wits. Liberation battle of Haiyang City finally broke out, Zhao Hualong led the guerrillas for the siege of the Eighth Route Army main clearing away the obstacles, Koizumi Shoucheng forces defeated, was killed in a minefield. Zhao Hualong and his troops marched to the new battlefield.