At first, Katie and her friends can't wait to enter the fourth grade! But with the pressure of new classes, teachers, and friends, Katie isn't so sure she likes it after all. And to make matters worse, the magic wind appears twice—and turns her into her new friend Emma Weber, who has her hands full with three younger siblings to help take care of, and then into her former best friend Suzanne as she's about to make her fashion runway debut! What's a fourth-grader to do?