Addie Bell is certain that life would be so much better if only she were older. She never imagined the wish she makes on her twelfth birthday would actually come true. But it does, and when she wakes up the next day, she's sixteen. While many things about being sixteen are as cool as she imagined, she finds that some very important things are not--including her relationship with her best friend Grace. Now all Addie wants to do is go back in time to enjoy the years she skipped.