Seven Little Australians tells the story of the adventures of seven mischievous Woolcot children, their stern father, and flighty stepmother Esther, living in Sydney in the 1880s. Mr. Woolcot is an army Captain who has little understanding of his children, and their 20-year-old stepmother Esther can exert little discipline on them as they wreak havoc wherever possible. After a children's prank, when they embarrass Captain Woolcot at his military barracks, he orders that ringleader Judy be sent away to boarding school in the Blue Mountains and tries to be even more strict, but children always find the way to the next adventure.