Judy is more confident than ever that she and her friends are waiting for the biggest summer of their lives! However, her megaplane goes awry: her friends have left, her parents have gone to California on their own, and Judy has stayed at home with stink and the eccentric Aunt Opal. Non-boring summer is under threat! But Judy Moody wouldn't be herself if she didn't find a chance to get into crazy adventures: riding a "screaming monster", watching a zombie movie, hunting Bigfoot and finding Mr. Todd... And it seems that this is the coolest summer of her life!