The Hardy brothers travel to London, England in search of their missing father and stumble onto a crime wave culminating in the robbery of the century.
Frank and Joe go up against a dangerous international kidnapper, with Joe guarding his intended victim while Frank tries to get information out of their enemy's daughter.
A Russian General's daughter attempts to defect to the U.S. by hitching with the Bread band. Upon landing, she disappears. Frank and Joe race against the KGB to find her.
As Frank and Joe continue to race against the KGB to find Marla first, an undercover Federal agent, Paul Owens, may have his own agenda to find Marla first.