A ship carrying traveller Aaron Fallon (Russ Harvey) is wrecked off the coast of a strange, uncharted island. Only Fallon and the ship's captain (Henry Garcia) survive, and they soon find themselves in the clutches of the mad Count DeSade (Bill McNulty), who is keeping his insane, diseased wife (Eunice Grey) in the dungeon below the castle in which he lives. The count is deranged and hallucinating, and prepared to inflict terrible tortures on anyone he believes threatens him or his solitude -- the two shipwreck victims and a mute servant girl (her tongue cut out by pirates) soon find themselves in that position. A lot of violence ensues, amid much dialogue that's fairly incomprehensible on a logical level but which works in the sense of being generically horrific. Fallon and Cassandra, a servant (Helen Hogan), are the only survivors, and they await rescue, not knowing that they're already doomed to a terrible fate.