A crew are at sea in search of Ambergris, better known as whale gold. A substance worth 5 times its weight in gold. When a number of the crew find a deposit on an island things get difficult when they try to hide their find from the rest of the crew.
Authorities become alarmed when they realize parts of an atomic bomb are found among the baggage from a crashed airliner. The Invisible man is tasked with finding out the source of the parts.
