California Blue is a book about standing up for what you think is right. In this book, a boy named John finds out that his dad has cancer. To get his mind off the bad news, he decides to take a jog in the woods and stumbles upon a rare blue butterfly that isn't found anywhere else on Earth. The problem is, John's dad works for a lumber mill that wants to cut down the forest where the butterfly resides. Should he side with his father and pretend this new species doesn't exist; or follow what he believes is right?