The staff and vacationers at a first-class resort on the island of Maui are beginning to mysteriously disappear. A biologist believes that an underwater earthquake has caused a giant and very hungry dormant prehistoric fish to be released from its slumber. The fish voraciously helps itself to a tourist buffet. Now it is open season for the local fishermen to find and kill the creature.
An ugly, misshapen podiatrist ingests a formula made by a colleague and turns into a handsome, devil-may-care (but violent) ladies' man.
Computer genius and chess champion Ted Danson is lured into service by secret agent Eleanor Parker and becomes a reluctant hero thanks to a number of exploits with villainous Christopher Lee and his army of lethal blue-eyed blonde women.