George and Harold and their doubles, Yesterday George and Yesterday Harold, have been taking turns going to school, but when the doubles fall prey to their gym teacher, Mr. Meaner, and his method of mind control that turns students into attentive, obedient, perfect children, it is up to original George and Harold to strike back.

"Who says princesses don't wear black? When trouble raises its blue monster head, Princess Magnolia ditches her flouncy dresses and becomes the Princess in Black!" --

When a goo monster crashes the science fair, the Princess in Black is on the job, and with the help of the Princess in Blankets, sets out to save the science fair.

When Dr. Marmalade prepares to destroy the world, the Bad Guys have a chance to be superheroes.

Led by Duncan "Gluestick" Dewey, the NERDS team uses brain power and courage rather than gadgets when they face off against supervillian Simon, his band of savage squirrels, and Albert, a middle-aged computer genius who lives with his mother.

When Mr. Wolf is blown up to Godzilla proportions, the Bad Guys find themselves in monster-sized trouble. They must figure out how to stop an alien invasion and get Wolfie back to his old self before the world is totally destroyed. Good thing they have the International League of Heroes on their side, and some newly honed superpowers ready to put to the test...

When a former member of NERDS turns into a villainous cheerleader, Matilda "Wheezer" Choi and the rest of the NERDS must infiltrate the cheerleader squad and save the world from a machine that wreaks havoc by entering other dimensions.

The Bad Guys find themselves sixty-five million years in the past where they must avoid being eaten by dinosaurs, fix their broken time machine, and get back home before an evil alien destroys the world.

"There's a supervillain on the loose with a deep connection to the NERDS--and she's obsessed with destroying them. Miss Information recruits her own team members and gives them supernanobytes. She calls them the Brotherhood of Unstoppable Liars, Lowlifes, and Intimidating Enemies of Society (a.k.a. the BULLIES). They have a time machine. Although Ruby "Pufferfish" Peet has terrible allergies, she's a born leader. But her abilities as a field operative...

"Princess Kara learns she has superpowers! Can she save her kingdom from an evil enemy?"--Page [4] of cover.