Ben and Bella love the pages of their book. So, when jumping from page to page, they suddenly find themselves in the wrong book altogether, they are most perplexed. For Ben, Bella, and readers, what follows is a rollercoaster journey through a counting book, a comic book, a history book, a puzzle book, an ebook, a craft book, a sticker book, a spot-the-difference book, and finally a scary book - which ultimately propels them back into their own book. Phew!