Did you ever see video run backwards so that it looks like something happened in reverse? There is a commercial that shows a fire, and it runs backwards so that the house becomes complete again. There is another that shows a messy stain on a shirt, and the tape reverses so that the stain disappears. Well, what if you could reverse the life of a human being in the same way, so that a person would grow young again? That is exactly what happens in this book.