A woman reporter, a navy investigator, and a heavyset police detective come across a gang which scuttled a ship in order to loot her later, underwater, for a Navy money consignment.

On an airliner bound for Hong Kong, Tony, a career crook who deals in stolen diamonds, agonizes over whether he should stick with his girlfriend or pursue Pamela, an intriguing novelist with whom he's instantly infatuated. Viewing Tony's dastardly deeds as great material for her new book, Pamela gladly encourages him to continue his criminal behavior.