Hap Ki Do is a film set in 1935 about three young Chinese students who study Martial Arts in Korea and return home during the Japanese occupation of Korea and China. The Chinese students find their task of opening a school in Chang Zhou under the banner of Hap Ki Do a daunting challenge when fighting against the oppression of the Japanese school of Black Bear. The Japanese students are bullying the people of the town and taking advantage of their military rule. The female leader of the Chinese school discovers she must fight to the death to find justice.