Judy is excited about becoming a doctor, especially when Class 3T starts a new unit on the human body, but she learns more about being a patient when she catches tonsillitis from her little brother, Stink.
When Judy Moody gets serious about protecting the environment, her little brother Stink thinks she is overdoing it, but she manages to inspire her third grade class to undertake an award-winning, environment-saving project.
As Hurricane Elmer hits, Judy, Stink, and the entire Moody clan hunker down and ride out the storm, but when the power goes out, Grandma Lou proposes some activities to pass the time in the dark.
Judy's big plans for the summer seem ruined when two of her best friends go away, and then her parents leave her and Stink with Aunt Opal, but a new "thrill-a-delic" plan has her racing toward fun.