Kat and Robin leave Boston on a church mission to help combat human trafficking in India while Kat recovers from a sexual assault and Robin seeks his birth mother.

Five-year-old Saroo gets lost on a train which takes him thousands of kilometers across India, away from home and family. Saroo must learn to survive alone in Kolkata, before ultimately being adopted by an Australian couple. Twenty-five years later, armed with only a handful of memories, his unwavering determination, and a revolutionary technology known as Google Earth, he sets out to find his lost family and finally return to his first home.

A biography of the founder of the Missionary Sisters and Brothers of Charity, known for her work with the destitute and dying in the streets and slums of Calcutta and other cities.