Stop-frame animation. The adventures of Frank and Buster, two intrepid young koalas who fly around the Australian Outback in their yellow plane, on a special mission to help other creatures in need. The Koalas are having an afternoon tea party, and Mitzi makes a lot of rash promises about what she can do to help. When she finds she has promised too much, she goes the the Koalas for help. Mitzi learns that you should only make promises if you can keep them.