"When Rosie Revere's Uncle Ned gets a little carried away wearing his famous helium pants, it's up to Ada and friends to chase him down. As Uncle Ned floats farther and farther away, Ada starts asking lots of questions: How high can a balloon float? Is it possible for Uncle Ned to float into outer space? And what's the best plan for getting him down?"--

George and Harold, and their doubles, Yesterday George and Yesterday Harold, have a good thing going. Two of them go to school, while the other two hide in the tree house and play video games all day-then they switch! But when their malicious gym teacher, Mr Meaner, creates a method of mind control that turns their fellow students into attentive, obedient, perfect children, the future of all humanity will be in their hands!

When Ella Mentry School invites a local dentist to speak on National Dessert Day, A.J. and his friends uncover the dentist's secret plot to promote cavities for more business.

A.J. and his friends get a Personal Digital Assistant named Miss Porter as a substitute teacher, who can order pizza and tell endless jokes, but grows power-hungry when her system is changed and tries to take over Ella Mentary School.

The monstrous Turbo Toilet 2000 is determined to take revenge on George, Harold, and Captain Underpants.

One step closer to stopping the Shadow Dragon from blanketing the world with its sky-shadow, Drake and the rest of the Dragon Masters must learn how to play the Star Flute in order to summon the Star Dragon.

Eva decides that warning all the animals in the forest about the approaching storm is a perfect project to prove herself worthy of taking the Owl Oath, but when she stops to help a lost pony and they get caught in the storm, they have to take shelter in a cave, and end up helping each other to stay brave.

"Creepy! Crawly! Criminy! Stink is bonkers about most scientific things. But dangle a spider in front of him and he goes berserk! Stink is so freaked out by spiders that he can't read about them. He can't look at them. He can't think about them. And he for sure can't touch them! Stink has arachnophobia (a fear of spiders), and he has it bad. But when a hairy backyard emergency arises, Stink is forced to face his fear--and eight beady eyes--head-on....

When Nancy Clancy finds out that both her guitar teacher, Andy, and her favorite babysitter, Annie, have broken up with the people they were dating, she decides to make them fall in love on Valentine's Day.

While trying to rescue their friend Griffith, Drake and Rori team up with a boy named Llew and try to gain the trust of a Crystal Dragon.