Poverty was a stark reality for Saroo and Gaddu. Their father left them and the mother tried to make a living by moving rocks. In hopes of helping their mother they went to look for things they could sell or coins that fell to the ground by the passengers on the train. Saroo was only five years old, and was not able to stay awake while they looked around the train station. Gaddu left Saroo on a bench to sleep, promising to come back. Saroo woke during the night and his brother never came back. Saroo looked everywhere for his brother but wasn't able to locate him. Saroo searched a train that was stopped at the station and he fell asleep on one of the seats. The train began to move and it took Saroo on a long trip across the country.
He ended up living on the streets of Calcutta for three weeks and then was adopted by an Australian couple. He didn't know his last name or the city he lived in. The authorities began a search for Saroo's family but nothing came of it. Saroo lived in Australia for 25 years but always longed for his family. Then his search began. Google Earth was his vice to find his family.
The film is based on a true story which makes it more compelling to watch. Dev Patel does an excellent job portraying Saroo Brierley.