The next-to-last show to be filmed features an escaped convict posing as a diplomat from a Far Eastern country in order to get at the country's store of gold bullion in a Honolulu bank. He hires experts with lasers to penetrate the light-beam screen surrounding the bank vault, burn a hole in the vault's floor, heat the gold until it liquefies and drain it through ceramic tubing. McGarrett gets a clue to what's happening when the bank's thermometer (located near the vault) starts to freak out, but he still has to find the thugs' hideout before they solidify the gold and escape.

Israel's celebrated Nazi-hunter Yuri Bloch has apparently been killed in Honolulu while trying to gather information about a war criminal named Emil Klaus. Knowing the Bloch would only have come to Hawaii if a former Nazi were hiding there, McGarrett and Five-O conduct their own search for Klaus -- while Bloch's partner lies badly wounded in a safe house, and the woman caring for him does what she can to assist while undercover.