In order to release his kidnapped sister, sports car mechanic, Chan Foh To, has to defeat a super-criminal street racer.
So goes to the U.S. to open a martial arts school. Around this time, many Chinese people were sold off to U.S. railroad companies, and were brutally treated by the Americans under the harsh working conditions. Thus, the American workers' hatred towards the Chinese immigrants is high. As a result, So gets into trouble with the Americans and the mob, and calls Master Wong for help.
Anthony Wong and Jan Lamb are unenthusiastic teachers till new colleague Cathy Tsui rekindles their interest in school and life.
