The Incredibly valuable Six Gems is stolen from a fortress-like jewelry establishment in medieval China. The plot thickens when the #1 suspect, Pan Chen-Feng (played with sinister glee by Lo Lieh) is mysteriously poisoned in this unique Asian who-dun-it murder mystery.
Jackie Chan stars as Wong Fei-Hung, whose mischievous antics land him in hot water. Having tolerated enough of his son's mishaps, Fei-Hung's dad enlists his sadistic uncle, who specializes in drunken-style kung fu, to teach the lad some discipline.
Spoofing the entire 1940s detective genre, and his own performances as a bumbling private detective, Peter Falk plays Lou Pekinpaugh, a San Francisco private detective accused of murdering his partner at the instigation of his mistress, the partner's wife, Georgia Merkle.