Maddie is a middle school girl who loves mustaches. She always carries a couple in her pocket for just the right moment. Middle school is a typical mix of homework, teachers, mean girls and bullies. Mean girl Cassie rules the girls and decides who is in and who is out. Maddie wants to be one of the in girls but doesn't like the way Cassie treats everyone. When Maddie gets the part of Juliet in the school play things go south with Cassie. Maddie is also dealing with the fact that her arm doesn't seem to be working properly. Turns out she has a brain tumor and has to have surgery. 

This book is based on the authors own daughter's experience so it has a lot of great details about what happened to Maddie and how her classmates and family rallied around her. I loved Maddie and her love of mustaches. I also liked how she figured out how not to be like Cassie and became a better friend. I did think some of the games they played seemed a bit young for middle school. Most of the middle school kids I know don't play imagination games like these kids do. It seemed a bit young. Other than that I thought the book was spot on.