Thousands of years ago, the mysterious city of Mohenjo Daro was home to an unknown, advanced and prosperous civilization that used technology and constructed buildings that were unique to the ancient world. Artifacts, relics and ruins reveal startling evidence that the inhabitants of Mohenjo Daro possessed inventions that were far ahead of their time. How and from whom did these remarkable people acquire knowledge of such sophisticated technology? Why did this enigmatic civilization vanish? The history of the ancient world is full of secrets.