Fantasy and Reallity: Glasslipper Or Not

May is reading a little bit of the Grim's fairy tale book that her grandmother gave to her. Cindy wish to get out of the politon that she is in. One day something happens and they witch places and now are somewhere they don't know. What the rules are for the book May got, so what is going to happen to the and why is this happening days before the school dance?