It's summer. And while the students long for a cool down, the teachers' minds are heating up. A violent quarrel breaks out between Mrs. Maus and Mrs. Harschmann. Meanwhile Mrs. Graustein is about to entrust the girls with a task. They are to prepare a refreshing drink without using magic. While Esther makes use of magic, Mildred and her friends actually manage to prepare the desired drink. The envious Esther can't let Mildred win!