The adventures of Frank and Buster, two intrepid young koalas on a mission to help other creatures in the Australian outback. Mitzi discovers a toy carousel in Sammy's shop, and runs home to count the coins in her money box. She hasn't got enough, and the Koala Brothers suggest she does errands to make extra cash. Yet she still doesn't have enough. When all seems lost, Buster offers her a cake to sell in town, and with one final coin from Ned, Mitzi earns enough money for the carousel.