Archie comes to the Koala brothers' homestead with a problem. His head seems to be wobbling, and he's worried. The Koalas realise that it's Archie's tooth that's loose, and reassure him that a loose baby tooth is normal, and will eventually fall out, to be replaced by a shiny new one.
In the meantime, they try and take Archie's mind off the loose tooth by various means, including taking him for a flight in the plane, and by playing party games.
Whilst bobbing for apples, Archie discovers that his tooth has come right out! As the Koalas promised, Archie eventually gets a bright new tooth, and his life gets back to normal.