Fourth grade doesn't turn out quite the way Ramona has hoped. Mrs. Meacham wants her to improve her spelling. Ramona also must be a good role model for her baby sister, Roberta. And Mrs. Quimby wants her to spend more time with, the super-perfect Susan. Fourth-grade life isn't always easy, but it's full of adventure, and at the end of it all- a "zeroteenth" birthday to celebrate.