This story takes place in a border town in modern China. The exploration team of Xu Fuxiang, the chief shopkeeper hired by Wanfu Shaoguo, discovered gold deposits in the northernmost border of China and drew a map of gold deposits (maple leaf map). This information was obtained by Japan, which was competing with Russia for mineral resources in the northeast of China at that time, thus starting a bitter pursuit. The Japanese atrocities, the death of Xu's wife and other blood feuds have all become the son of Fu Xiang, and Donghui began to shake the border. When the Japanese launched the war of aggression, Xu Fuxiang burned the Maple Leaf Map, sold the company, bought weapons and ammunition and shipped them to Qiqihar, thus starting a feat of supporting China's army in the war of resistance.