Sophie Miller has tried out all sorts of titles for herself: Sophie the Awesome, Sophie the Hero, Sophie the Chatterbox... Will Sophie the Zillionaire be the one that sticks? She sure hopes so! When Sophie finds fifty dollars on the sidewalk, it gives her a great idea for a new name: Sophie the Zillionaire! But snooty Mindy VonBoffmann already has a hundred dollars of her own. To keep the name Sophie the Zillionaire, Sophie has to make more money — and fast. Being a zillionaire isn't as easy as she thought! Could her new name turn into a money-making mess?