 The Chinese (led by Wo Fat), the Soviets (led by Mischa Toptegan) and assorted criminals are all after perfect counterfeit plates. The plates were originally developed by the Chiense, who want to use them to flood international markets with phony U.S. currency and destroy the American economy. Jonathan Kaye enlists Five-O s help to track down the plates and a Navy intelligence officer, and a friend of McGarrett s, also is part of the probe. However, the Navy man is secretly working with Nicole Fleming, one of the criminals after the plates.