This story follows Xu Youjin as he masters his martial arts under his teacher, then travels with him to Shanghai, where they make a living performing martial arts and selling their skills. There, he is exposed to the world beyond his hometown. By chance, he plays the hero and saves a beauty: Japanese spy Yamaguchi Hideko. They fall in love, and deceived by her and fellow Japanese spy Yamaguchi Taro, he helps them seize control of a dock. Using his own strengths, he intercepts a shipment of Western medicine for a Communist revolutionary base and destroys a Japanese virus research institute. Later, after learning Yamaguchi Taro and Yamaguchi Hideko’s true identities, Xu Youjin does what is right, even at the cost of those he loves. The story portrays the patriotism of a passionate young man and explores the values of love between men and women.
