Gerald is careful. Piggie is not. Piggie cannot help smiling. Gerald can. Gerald worries so that Piggie does not have to. Gerald and Piggie are best friends. Gerald is tired and cranky. Will Piggie be in his dreams? Or will she keep Gerald from dreaming at all? Mo Willems creates another hilarious escapade starring the award-winning duo that will have early readers breaking into laughter from the first page.