Stan Rawlings and his married friend Dave arrive on the Island to chase girls, and Stan asks Roarke to help him learn the secrets of the female mystique. Stan gets transformed into a woman, ""Brenda,"" and Ariel provides ""him"" with tips. Mary Wilcox, the descendent of male soldiers, comes to the Island to fulfill her wish to become a soldier. Roarke puts her into an alternate World War II fought by women. Forced to choose between fighting and helping a wounded comrade, Mary helps the injured soldier instead.