Beaver, the smallest boy, decides to run away and leaves a note saying that he goes into the bush, and his buddies fret over his whereabouts.

The children from Secret Valley help the police to apprehend a bank-robbing couple.

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.