After a general kills a member of the Fook Yun Clan, several of the victim's associates seek revenge by getting two of martial arts master Wong Fei-Hung's (Kwan Tak Hing) leading students to teach them a deadly kicking style -- a self-defense move known as "the kick without shadow" that was popularized by the late Bruce Lee. This innovative story includes the details about how the kick was developed, including background on its essential purpose.