Ezra may be smiling on the outside, but that doesn't mean he's smiling on the inside. He enjoys having a casual conversation in the hall with his classmates, but when it comes time to ask to join their game of soccer or sit by them at lunch, Ezra freezes up and doesn't know what to say. Instead, he hides his nose in a book and says nothing. Until the day his teacher explains about having an invisible backpack. The invisible backpack that...