When her best friends and her parents are going away for the summer, Judy worries that it will be the worst summer ever spent with little brother Stink and Aunt Opal.

Judy Moody is determined to make this the best summer ever by developing the thrill points race, in which she and her friends accumulate thrill points throughout the season by doing daring things.

With her birthday coming up, Jessica hopes that, just maybe, her present will be a real-live potbellied pig. Jessica can hardly wait for her party with Judy Moody and all their friends. But Judy Moody is acting like a pig-head, and Jessica UN-invites her from the party. To make matters worse, Jessica has snooped around the house and has found zero sign of a pig present. Could her birthday be any more of a disaster?

"Just once, Frank Pearl would like to win at something! He is going to win a prize if it's the last thing he does. Could an amazing yo-yo trick or Cookie the parrot land him a prize? Could a blue ribbon be his at the Great Third-Grade Breakfast Bash? With three shots at a prize and Judy Moody cheering him on (sort of?), there's no way that Frank can miss out on a trophy this time" --

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.

The town's annual Turkey Trot race and festival is coming up, and Judy and Stink are training to win.