Convinced that her family is poor because her parents refuse to get her a horse or a swimming pool, nine-year-old Jenny Archer follows her own path to making money, including a plunge into real estate that puts her house on the market.
Twelve-year-old Greg, who has always been good at moneymaking projects, is surprised to find himself teaming up with his lifelong rival, Maura, to create a series of comic books to sell at school.
Summer vacation in their small Maine town does not look too promising until twelve-year-old Gina and four of her friends make a pact to become millionaires before school starts in September.
While his father is out of work because of a back injury, Anthony decides to try to earn money and his first job is watching a huge tarantula named Norman.