The 10-year-old Hubert Finn, known as "Fatty", lived in poor conditions in Australia in the 1930s. He and his friends stick together as they often have to defend themselves against the villain Bomer and his gang. Fatty wants a detector radio, but can't afford it. He has to raise money for it within a week, otherwise he won't get the radio ...

Ben Oxenbould
as Hubert 'Fatty' Finn

Rebecca Rigg
as Tilly

Jeremy Larsson
as Headlights

Martin Lewis
as Skeet

Hugo Grieve
as Seasy

Sandy Leask
as Lolly Legs

Greg Kelly
as Bruiser Murphy

Melita Simec
as Bruisers Girl

Christopher Norton
as Snootle

Bert Newton
as John Finn