Archaeologist Shum finds an antique jade with supernatural power in Greece. The stone is wanted both by KGB's agent Karoff and the Interpol. Shum asks his friend Nike for help. However, Shum is finally caught by KGB but the jade is slipped into the hands of a boy called Pan.
Master martial artist Masahiro Kai is a shadow of the champion fighter and trainer he once was. After his protégé was slain in a no-holds-barred, underground fight by the incomparable Chang Lee, Kai slips into a numbing alcohol-induced stupor to try to forget the past.