A band of fortune hunters (Bradford Dillman, Stuart Whitman, John Ireland and Donald Pleasence) decide to storm into the jungles of South America to discover a history-making cache of treasure. Undeterred by the geographical challenges, they head for the region, sure that gold and gems lie on the other side. Little do they know that they're not the only ones on a quest, and that finding the trove is going to be the least of their worries.