This drama mainly revolves around the background of the military and civilians of Heilongjiang Province who shared the same hatred for the enemy after the "September 18th" Incident and worked together to fire the first shot of the Anti-Japanese War. It tells the story of the military and civilians of the province fighting wits and courage with the Japanese army and the puppet army headed by Zhang Haipeng under the leadership of Ma Zhanshan, Chairman of Heilongjiang Province, and eulogizing the national heroes headed by Ma Zhanshan, who sacrificed their lives for the country, for the family, for the people! In Heihe, a small border town in Heilongjiang Province, under the governance of Ma Zhanshan, the then commander of the garrison, the people lived and worked in peace and contentment, but unexpectedly the Japanese army launched the "September 18th Incident". Ma Zhanshan was appointed as the acting chairman of Heilongjiang Province in a critical situation and took charge of military and political affairs. Ma Zhanshan found that the "war" and "peace" factions in the province were tit-for-tat. The "peace faction" headed by Zhao Zhongren, a member of the provincial government, had long been reduced to a pawn of the Japanese, constantly obstructing the "anti-Japanese faction" headed by Ma Zhanshan. On the other hand, Kuroki, the leader of the Japanese Black Dragon Society, also lurked in Qiqihar, waiting for an opportunity to assassinate and sabotage Ma Zhanshan's anti-Japanese war... Ma Zhanshan was in internal and external troubles, and was in crisis. Before the Japanese army launched the attack, he gathered the strength of the entire province to complete an indestructible line of defense-the Jiangqiao Line of Defense. However, within the province, the traitors headed by Zhao Zhongren pressed forward step by step; outside the province, the Japanese army mobilized elite troops and pressed the border; on the ground, the defenders lacked food and pay; underground, Zhang Haipeng's puppet army and the Japanese spy organization sent a large number of spies... Ma Zhanshan encountered the most severe challenge. But he overcame all objections, withstood the pressure, and cracked them one by one with lightning speed and brilliant means. The Japanese army had no choice but to jump over the wall and decided to launch a full-scale attack on Heilongjiang Province. The first shot of the Anti-Japanese War in China really started!