When her special bandage design does not win a big contest, Judy Moody realizes it is time to set her sights on something much bigger. Class 3T is studying the environment, and Judy is amazed to learn about the destruction of the rain forest and endangered species. She also notices her own family has some pretty terrible recycling habits! Now Judy is in a mood to whip the whole planet into shape. Even though her little brother Stink thinks she is going a bit too far, Judy is determined to make a real difference. She sets out to inspire her third-grade class to undertake an award-winning, environment-saving project. Join the world's best protector as she learns that even one small person can make a massive change in the world!