Amber Leighton is the wife of Dr. Anthony Leighton, the wealthy and successful head of a pharmaceutical company. While Amber seemingly leads a charmed life, it doesn’t appear to make her very happy, and she often inflicts her typically foul mood on those around her, especially the hired help. Anthony decides to surprise Amber with a cruise from Italy to Greece, with four of their friends in tow, but Amber doesn’t much care for the notion. Amber feels the yacht they’ve hired is far beneath her standards, and she makes extremely handsome Giuseppe, the first mate of the crew, the primary target of her dissatisfaction. Giuseppe, an ardent communist, feels nothing but contempt for Amber, but for the sake of his job he can’t say a word in response to her attacks. One day, Amber declines an invitation to go diving with her friends, but later changes her mind, demanding that Giuseppe take her to the underwater caves. Giuseppe warns Amber that a storm is brewing, and sure enough his prediction is shockingly accurate. Amber and Giuseppe are now stranded on a desert island, and suddenly they discover the tables have turned. Giuseppe, a trained fisherman and expert of the great outdoors, knows how to survive on the island, while Amber is utterly helpless. So like a true gentleman, he seeks revenge and forces her to cower under his commands in order to survive. Before long, their mutual antagonism turns into unfettered lust and Amber cheats on her wealthy husband with the hired help. Most of the unfettered lust takes place on sand.