When Judy learns that some of her ancestors lived in England and possibly related to the Queen, her nemesis Jessica Finch finds more surprise relatives that Judy wishes she could hide in a dungeon somewhere.
When her teacher Mr. Todd makes Monday special by celebrating Bubble Wrap Appreciation Day, Judy Moody's frown is turned upside down, prompting her to come up with the perfect idea to make this the best week ever.
A class visit to the Gross-Me-Out exhibit at the science museum inspires Stink Moody to create a variety of terrible smells to put on the sneakers he plans to enter in the World's Worst Super-Stinky Sneaker contest.
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.
After learning about the American Revolution on a family trip to Boston, Massachusetts, Judy Moody makes her own Declaration of Independence and tries to prove that she is responsible enough to have more freedoms, such as a higher allowance and her own bathroom.
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.