A twelve-year-old boy, worried that his parents may divorce, discovers that an island in the middle of the lake where he is spending the summer is the testing grounds of the mysterious Dr. Libris, who may have invented a way to make the characters in books come alive.

A little girl has a wonderful idea. With the help of her canine assistant, she is going to make the most magnificent thing! She knows just how it will look. She knows just how it will work. But making the most magnificent thing turns out to be harder than she thinks. All of her efforts are "wrong, " so she has a tantrum and talks about quitting. Fortunately, her assistant leads her to look at her work anew.

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!

Luthor the Doberman, a former attack dog, has a good home with Savannah Drysdale, but every time a certain truck passes he goes into a frenzy, while Griffin Bing is caught up in trying to beat his rival, Darren Vader, at an invention contest.

Where some people see rubbish, Rosie Revere sees inspiration. Alone in her room at night, shy Rosie constructs great inventions from odds and ends. Hot dog dispensers, helium pants, python-repelling cheese hats: Rosie's gizmos would astound - if she ever let anyone see them. Afraid of failure, she hides them away under her bed. Until a fateful visit from her great-great-aunt Rose who shows her that a first flop isn't something to fear - it's something...

"Sabrina Sue wants to fly like all the other birds she sees in the sky. Will her flying machine invention be what she needs, or will she find another way to soar?"--

"Maxine and her best friend Leo must find a way to keep animals from eating their new garden, but when they can't agree on a way to get rid of the unwelcome guests, their friendship might be on the line too"--

When Kristoff and the ice harvesters challenge Oaken and his new invention to a friendly contest, Oaken, Elsa, and Anna becomes embroil in a mystery involving a missing ice harvesting machine.

Mr. Docker must be a mad scientist. He does nutty experiments and has an evil, demented, cackling laugh. Plus he invented a car that runs on potatoes! Mr. Docker is the weirdest science teacher ever! Is he trying to take over the world?

Mrs. Yonkers, the computer teacher, is the nerdiest teacher in the history of the world. She can type with her feet! She buys foam cheeseheads off eBay! She even puts a Webcam on a turtle! Is she trying to take over the planet?