Ordinary teen Stan Dryer (Ted Jan Roberts) has a normal life until the day a mysterious stranger appears. After the old man, who calls himself Master Yung, places a mystical ring on Stan's hand, he suddenly possesses amazing powers. But evil Vonn (William Zabka) wants the ring, and Stan soon finds himself in the fight of his life. This high-octane martial arts actioner co-stars Jacob Parker, Keith Coogan, John O'Hurley and Karen Valentine.