In Other Lands [Brennan, Sarah Rees]

Sometimes it's not the kid you expect who falls through to magicland, sometimes it's . . . Elliott. He's grumpy, nerdy, and appalled by both the dearth of technology and the levels of fit-ness involved in swinging swords around. He's a little enchanted by the elves and mermaids. De-spite his aversion to war, work, and most people (human or otherwise) he finds that two unlikely ideas, friendship and world peace, may actually be possible.