Riley, Cousin Alice, Aunt Martha, and Uncle Max visit the Australian Outback where they research the local koala population, which has scattered and shrunk due to increased drought, brush fires, and farming in the Outback. While staying at a working sheep station, they see kangaroos, a platypus, Ayers Rock, and much more. Riley becomes an official Jackaroo (Australian cowboy) and helps save the sheep from a wild dingo, but can he find a way to save the koalas and the Outback?