Mike (Greg Rowe) is a lonely young boy wandering through the fierce deserted coast of South Australia's Coorong, near the mouth of the Murray River. He and his reclusive father 'Hide Away' Tom (Peter Cummins) live in the isolated sand dunes facing the Southern Ocean. In search of friendship, Mike encounters another recluse in the wilderness, Fingerbone Bill (David Gulpilil), an Aboriginal man estranged from his tribal people. Fingerbone names Mike "Storm Boy" and enlists the child's help caring for three orphaned pelican chicks.