After a night of revelry, Astaroth (Stanley Baker), the Prince of Sodom, tells slave girl Tamar (Scilla Gabel) to carry a message to the king of the Elamites, with whom he plans to overthrow his sister, Bera, Queen of Sodom (Anouk Aimée). Returning from her meeting in the desert with the Elamite leader, Tamar is captured by a Sodomite patrol. Queen Bera demands the name of her co-conspirator. Tamar refuses to speak under interrogation and Bera has her and her two young sisters killed.