The world is changing right before the eyes of Will Tuppence. First he learns that a proton has died, and this has a profound effect on Will. He realizes that if a proton can die and become nothing, then every known piece of material in the universe, including Will himself, will eventually, inevitably cease to exist. Then, his two best friends kiss in the moonlight, and Will discovers some interesting changes and questions in himself. This is a boy's journey into teenhood: a struggle with questions asked and feelings wrestled with, and eventually some truths and some peace.