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Children of the Secret Valley mount a rescue operation of a certain tree, whose leaves are eaten by koalas.
Jan Van Gelder, owner of the Bildara junkyard, was an ace pilot during the war and has kept his small plane as a souvenir in a hangar by the runway. He is requesting a permission to the council to give airplane rides to children, but Cribbins enjoys refusing it with the excuse that he's too old to fly.
Children of Secret Valley organize an auction as an attraction for the weekend. Mistakenly they sell a small chest whose contents are the property survey deeds of Secret Valley