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.

Look! Up in the sky! Is it a falling leaf? A speck of dust? A speeding mosquito? No, it's Stink Moody, Solar System Superhero! When Stink learns that Pluto has flunked out of the Milky Way for being too shrimpy, he feels like he might just explode with a Big Bang. Stink has no choice but to take a stand for the sake of little planets (and little people) everywhere. Will he be smart enough to defeat a panel of big-shot scientists? Will he be strong...

As Judy and the rest of the Virginia Dare Bookworms prepare for the Book Quiz Blowout competition against second- and third-grade readers, her team discovers the other group has a fourth-grader and worry about their chance of winning sets in.

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.

Cuando se celebra el Día de los Presidentes en la escuela, Stink, el hermanito de Judy Moody y el niño más bajito de su clase de segundo grado, aprende algo sobre James Madison, el presidente más bajo en la historia de Estados Unidos. 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.

Stink may be a super science freak, but even Dr. Stinkelstein is feeling freaked out about having a slime mold living and growing in his very own room. At Saturday Science Club, Stink learns that these one-celled organisms are smart enough to find their way out of mazes and gang up on food sources. Stink puede ser un súper fanático de la ciencia, pero incluso el Dr. Stinkelstein se siente asustado por tener un moho de limo viviendo y creciendo...

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.