Treated as social outcasts by the school clique, Molly, Pixie and Marguerite decide to join the Girl Guides in an effort to meet new friends. But there is one problem: Pixies grandmother can not stand the Girl Guides! To change her mind, Marguerite and the girls try to impress her by setting up camp in the backyard. Their plan goes terribly wrong but an encouraging word from M. Chevrier helps turn the tide.

Pixie is out of tune. Previously she was cantor in the school choir but before the big district gala singing competition, Miss Orrick gives the position to Molly. After ruining her good dress, Molly borrows (without permission) one of Aunt Vera's blouses and a pearl necklace so she will have something to wear to the competition. Molly loses the necklace when the bus driving the choir to the competition is forced to stop for repairs. Pixie quickly scoops up the pearls but doesn't say anything until after a tearful Molly returns home after scouring the dusty country road.