"Liza is Henry's big sister, and Henry is Liza's little brother. As long as there has been a Henry and Liza, they have always done everything together. Haircuts, birthday parties, tree climbing, even flu shots. Liza and Henry. Henry and Liza. But that all changes when Liza starts school for the first time, heading off to kindergarten and leaving her little brother behind. Henry is incredulous. How can Liza do this to him?"-- Provided by publisher