I just started to read this book so I can't tell you much about it. This book is confusing at first but you figure it out later in the book. This book tells you about the grandparents first. The story of the grandparents explains why the book is called middle sex. And no this book is not all about sex, they are talking about the gender sex. This book is very interesting its hard for me to put this book down. If you want a book that is kinda long but also keeps you interested.