Seven Little Australians S01 E02 What are fathers for anyway

Both Pip and Judy are trying their best to make up for the embarrassment they caused their father at the dinner party, but they're also upset that they missed out on the pantomime. One day while running errands they decide to make a detour to the Bondi aquarium to ride the roller coaster. They leave the General behind at the military barracks but he goes missing.