After Judy obtains a mood ring, she tries to convince herself and her third-grade classmates that she can predict the future.

When Stink discovers that Pluto has been downgraded from a planet to a dwarf planet, he launches a campaign in his classroom to restore its status to that of a full-fledged member of the solar system.

After second-grader Stink gets an unsatisfactory grade in physical education, his parents tell him he must play a sport and so he masters thumb wrestling, as seen on a sports channel.

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.

In 1974 at her new San Francisco school, nine-year-old Julie does not want to tell her class about her parents' divorce, or to tell her sister about messing up her school assignment, but when she breaks her finger playing basketball and her whole family rallies around her, she realizes the importance of telling the truth.

No one at home or school understands Amanda Frankenstein's devotion to insects until she meets Maggie.