Sent by their vacationing parents to visit Mad Aunt Mabel, Perry and Ant have an adventure, while their younger siblings Sun Dance and Beany stay at home making burglar traps and searching for a magic sword.
Seven families are helped out by Mrs. Piggle-Wiggle's magic cures when they are faced with thought-you-saiders, tattletalers, bad table manners, interrupters, heedless breakers, never-want-to-go-to-schoolers, and waddle-I-doers.
Mrs. Piggle-Wiggle loves children, both good and bad. She never scolds, but has positive cures for children with special problems such as answering back or never wanting to go to bed.