Sammo Hung's (Martial Law) crowning achievement, The Prodigal Son introduces the new fluid concept of the Wing Tsun style at its most captivating.
Leung Chang (Yuen Biao) is a spoiled brat who thinks he is a remarkable kung fu champion, ignorant that his father actually pays his opponents to lose to him - until he meets up with an unrelenting opera performer Yee Tai (Lam Ching-ying, Mr. Vampire).
Beaten soundly by Yee Tai, Leong decides to really beef up his kung fu skills and asks Yee to take him as a disciple. Yee refuses but changes his mind after a Manchu prince and his men kill everyone in the opera troupe but them. When Yee is stabbed by the prince, it is up to Leong to avenge his fellow troupe members.
Hong Kong action movies are known for high-level octane, choreography and stunts, but not many attain the exceptional quality found in The Prodigal Son.