The Nabataeans built one of the ancient world's most improbable cities, carving temples and tombs directly into the sandstone cliffs of Petra, in what is now southern Jordan. This film traces their rise as desert traders who controlled the incense and spice routes linking Arabia to the Mediterranean, turning a nomadic people into the masters of a wealthy caravan kingdom. It follows the engineering that made Petra possible, the dams, cisterns, and channels that captured scarce rainfall in one of the driest regions on earth, and asks why a civilization sophisticated enough to manage water in the desert eventually vanished from history. Roman annexation, shifting trade routes, and a devastating earthquake all factor into the account of Petra's decline and abandonment. Footage of the Treasury, the Monastery, and the surrounding tombs carries much of the story, paired with historical context on how the Nabataeans absorbed Greek and Roman influences while keeping their own Arab identity intact.