Be careful what you wish for. We've all heard it, right? Nathanial only recalls ever wishing to be well. How could that possibly go wrong? He had been stuck in his bedroom hacking up a lung for twelve years, and as it had miraculously stopped about a year ago, the wishing seemed to have worked without consequence. But on his thirteenth birthday that old rule of wishes comes back to bite. He is whisked away, clear across the country, to a school for sprites in a giant tree called Hyperion. His new mentor, Boss, claims that he's getting what he wished for! But sprites are tricky, dishonest, selfish creatures that horridly use humans like factories. He couldn't possibly have wanted to be like them, so why on earth is this happening to him? Classes such as Factory Safety and Nature Tuning challenge Nathanial while new allies emerge to help him puzzle out missing memories. All the while his human origins must be kept a secret if he's to survive in this sprite world, and it's important that he succeeds... he has a promise to keep.