The adventures of Frank and Buster, two intrepid koalas who fly around the Australian outback on a special mission to help other creatures in need. When Buster asks George to put on a magic show, George tries to find any excuse to get out of it. The Koala Brothers find out about George's nerves, and do their best to reassure him. The show is a great success and he learns that he's more than just a good postman.