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.

At the end of recess at Eerie Elementary, everything on the school grounds suddenly comes alive and turns into a fog-filled jungle maze intent on trapping and disposing of hall monitor Sam Graves and his friends Antonio and Lucy.

Since the Notebook of Doom was stolen Alexander and the other monster hunters of Stermont Elementary have been operating without its assistance and now they are confronted by a large and stinky monster with eight powerful noses that can deliver a slimy sneeze with the power of a cannon--and somehow they must figure out its weakness.

Jules is an ordinary seven-year-old girl, concerned with school and friends and other ordinary things--until a chance meeting with a casting director leads to an audition for a television commercial.

Mrs. Meyer from the local fire department comes to Ella Mentry School to teach the kids about fire safety, but Mrs. Meyer likes fire just a little too much.

When Miss Aker, a special guest at Ella Mentry School, shows A.J. and his friends how to create cool things out of all kinds of materials, they accidentally build a robot smart enough to take over the world!

On picture day at Ella Mentry School, the strange new photographer wants to turn A.J. into a supermodel and the Picture Day Zombie makes an appearance.

The latest monsters threatening Stermont Elementary are shadowy shapeshifters that attach themselves to people, eat their shadows, and block out all light--but before he can think of a way to deal with them, Alexander has to deal with a startling revelation from his friend Nikki.

"After noticing that A.J. and his friends' geography knowledge could use some work, Mr. Cooper invites to class just the person to help. Globetrotter Mrs. Barr speaks seven languages and has visited nearly two hundred countries! But why does she carry a suitcase everywhere she goes? And why does she open a window whenever she walks into a room? Perhaps Mrs. Barr has something to hide!--

Missy wants to take home the class pets, but another girl, Tiffany, has already asked their teacher so Missy and her friend Oscar need to come up with a plan to make Tiffany change her mind.