In 1932, as the nation stood on the brink of turmoil, four patriots formed the “Traitor-Elimination Squad,” secretly fighting against the Japanese in Shanghai. Their heroic deeds caught the attention of Shanghai’s gang leader, Master Hu Ba, himself a devoted patriot. He invited the squad to join forces in underground resistance activities, and together they devised a covert plan to assassinate Japanese officer Kurokawa Ichizawa.