Oxford lecturer Diana Morgan is an expert on Greek mythology. Her obsession with the Amazons started in childhood when her eccentric grandmother claimed to be one herself before vanishing without a trace. Diana's colleagues shake their heads at her Amazon fixation. But then a mysterious, well-financed foundation makes Diana an offer she cannot refuse. Traveling to North Africa, Diana teams up with Nick Barran, an enigmatic Middle Eastern guide, and begins deciphering an unusual inscription.