At only five years old, Saroo Brierly got lost on a train in India. Unable to read or write or recall the name of his hometown or even his own last name, he survived alone for weeks on the rough streets of Calcutta before ultimately being transferred to an agency and adopted by a couple in Australia. Eventually, with the advent of Google Earth, he had the opportunity to look for the place he once called home. One day, after years of searching, he miraculously discovered what he was looking for and set off to find his family.