A fleet of boats dock at the port of Sanjan in Gujarat in 720 CE. They carry eighteen thousand frightened souls fleeing the cruelty of Iran's Umayyad Caliphate. Chanting Sanskrit-like prayers, the high priest consecrates a sacred fire to thank their god, Ahura Mazda, leading them to a new home and hope. He uses a mysterious substance to spark the flame, but few know of its miraculous properties or provenance. Centuries later, Parsi scientist Jim Dastoor...