When Pete and Ellie choose to start a family, they stumble headfirst into the world of foster care adoption. After they learn their perfect foster child comes with two other siblings, Pete and Ellie find themselves speeding from zero to three kids overnight and must hilariously learn the ropes of instant parenthood if they hope to become a real family.

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.