The six horrible Herdmans, the worst kids in the history of the world, cause mayhem throughout the school year.

In his Grandpa Al's garage workshop, child genius Frank Einstein tries to invent a robot that can learn on its own, and after an accident brings wisecracking Klink and overly expressive Klank to life, they set about helping Frank perfect his Antimatter Motor until his archnemesis, T. Edison, steals the robots for his doomsday plan.

"Frank Einstein (kid-genius, scientist, and inventor) and his best friend Watson, along with Klink (a self-assembled artificial-intelligence entity), and Klank (a mostly self-assembled and artificial almost intelligence entity), once again find themselves in competition with T. Edison, their classmate and archrival--this time in the quest to unlock the power behind the science of the human body"--

Abigail and John, the Templeton twins, and their dog Cassie, foil a pair of inept kidnappers intent on stealing one of their father's newest inventions.

New adventures await Doctor Proctor, Lisa, and Nilly as they try to protect Oslo, Norway, from invading aliens, enormous snakes in the sewers, seven-legged Peruvian sucking spiders, and sinister waffle irons.

New friends Nilly and Lisa help eccentric professor Doctor Proctor develop his latest invention, a powder that makes one fart, making them very popular at school, but someone is planning to steal the industrial-strength formula for evil purposes.