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.

Stink Moody, friends Webster and Sophie, and Mrs. Birdwistle visit tourist attractions in Virginia as they try to give away 101 guinea pigs rescued from a laboratory, although Stink is very reluctant to give away his favorite, Astro.

Seven-year-old Stink Moody discovers that he can get free samples by writing letters to candy companies and plans a surprise for his best friend's birthday.

Rocky is perfecting the tricks for his magic show when Judy Moody offers to be his assistant. Rocky agrees, but it turns out that Judy -- or Stella the Spectacular as she calls herself -- is the most UN-spectacular assistant ever. When she gets ketchup all over the magic rabbit, the Amazing Mr. Magic has had enough! Is Rocky's magic good enough to mend his and Judy's friendship?

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.

The shortest kid in the second grade, James Moody, also known as Stink, learns all about the shortest president of the United States, James Madison, when they celebrate Presidents' Day at school.

Judy Moody's new friendship with Amy Namey causes problems with her old friends and the school project they are working on together.