Cyril and Fiona, a free-wheeling married couple, travel to a tropical coastal town to follow their sexual fantasies. Cyril is a manipulator. There, they meet another couple, Catherine and Hugh, and their three children. Hugh is a one-armed photographer who specializes in nude photographs of peasant women. Soon, they decide to live together and an erotic atmosphere develops between them.

In Victorian England, wealthy patriarch Sir Harald Alabaster invites an impoverished biologist, William Adamson, into his home. There, William tries to continue his work, but is distracted by Alabaster's seductive daughter, Eugenia. William and Eugenia begin a torrid romance, but as the couple become closer, the young scientist begins to realize that dark, disturbing things are happening behind the closed doors of the Alabaster manor.