On the grounds of the witch academy a garden show is taking place, for which Frank Blütenstaub has been preparing for quite some time. His dream is to win the first prize with his pumpkins. This dream is shattered when one morning he discovers only one single pumpkin in his garden. Who would do such a thing? Mrs. Harschmann suspects Mildred, of course, who in turn suspects Esther and Drusilla. Who really did it?