The mutant babies have been placed by court order on a deserted island. Appalled by the cycnicism and exploitation of the children by the legal system and the media, the man responsible for them leads an expedition to the island to free them.

When a man-eating cave creature appears with a fortune in uncut diamonds around his neck, Dr. Chambers' daughter Denae hires adventurers C & C Salvage to find the underground source of the gems. Accompanied by archeaological intern Andrew Paris, mineralogist Prof. Strock, and C&C's scruffy owners Cort Eastman and Eddy Colchilde, Denea's hopes of emerging from her famous father's shadow become as remote as getting out of the caves alive!