Jessica Wakefield is a wonderful baker! At least, that's what her home economics teacher thinks when she tastes the cookies Jessica baked in class. They're so good, the teacher submits a batch to the producer of the television talk show Lifestyles of the French and Famous. And now the producer has invited Jessica to appear on the show with four hundred of her delicious cookies for the studio audience! Jessica is thrilled. She and her friends in the exclusive Unicorn Club get to work baking cookies. But there's one big problem: Jessica can't remember the secret ingredient that made her recipe so amazing! And the harder the Unicorns try to follow the recipe, the worse the cookies taste. Will Jessica have to appear on national television with four hundred of the worst cookies ever baked?