This episode suggests that the development of various weapons throughout history may have been guided by aliens. Examined are ancient legends that speak of fire and the secrets of metalworking as gifts from the gods; stories of divine weapons such as Excalibur as possibly powered by an alien source; the mystery of Greek fire as a gift from angels for the Byzantines; the development of the complicated chemistry of gun powder by the ancient Chinese; the writings of the Hindu Mahabharata describing weapons reminiscent of guided rockets, beam weapons and nuclear devices used by the gods; and the Cambodian tales of Preah Pisnulok who wielded a blazing sword reminiscent of the science-fictional lightsaber.

Iron swords forged in blazing hot fires… Gunpowder with the power to tear apart human flesh… And rockets capable of destroying entire cities... Throughout history, advances in technology have lead to the development of powerful weapons–each more deadly than the last. But were these lethal weapons the product of human innovation–or were they created with help from another, otherworldly source?

Broken