Stripped and lashed to the mast of a pleasure yacht. Rod is erotically harassed and teased by the bizarre techniques of the world's most depraved women. Will he die writhing in ecstasy? Will he go berserk? Can he escape his beautiful tormentors in time to halt a conspiracy to destroy the Western powers by an invasion of murdering "Mermen"-enemy agents scientifically equipped to live underwater? The erotic torment to his body continues ... Never has Rod taken such a licking ... Sex-which has been his whole life-threatens to be his death!