Three people vacationing in Puerto Rico go for a swim. When they resurface, they realize that something in the air has killed everyone on the island; has the entire world been destroyed this way? Since the trio is made up of two men and one woman, it's not long before the men are battling for the ultimate prize! This film was made only because director/producer Roger Corman was in Puerto Rico to shoot Creature from the Haunted Sea, but it remains the sort of fun, offbeat drama that could only come from the Corman team!