Abby and Stacy build a tree house and decide not to share it with the other cul-de-sac kids, even if they have to form a new all-girls club to get their way.
Even though Abby, the club president, is out of town, Stacy and the rest of the Cul-de-sac Kids vote to have a yard sale to raise money to buy flags for Flag Day.
Jason takes advantage of his parents' absence to sneak forbidden chocolates behind his babysitting grandmother's back, but a Bible verse and a talk with God help him understand the importance of good behavior.
After an ice cream party to celebrate the last day of school, Dunkum's cousin Ellen's seeing-eye-dog disappears, and the Cul-de-sac Kids get help from an unexpected source in solving the mystery.