Ella Mentry School counselor Dr. Brad believes wisecracking A.J. may be a genius and subjects him to some very weird tests to find out for sure.

Down on their luck, the Tooting family buys an old camper van and begins repairing it, but after installing an engine that once belonged to an extraordinary car, they are off to find other original parts, pursued by a sinister man who wants Chitty for himself.

The After School Kids' Care director wants to get into The Guinness Book of World Records, and A. J. and the gang jump in to help him.

When the new vice principal is put in charge of Ella Mentry School for a few days, she tries out some very unusual ideas about how students learn.

When forced on a camp-out with their fathers, ten-year-olds Malcolm and Dandy seek the smelly ghost of notorious outlaw Wild Willy Wallace, who is believed to haunt his old hideout at Lake Itchyburr.

Second-grade graduate A.J. and his family rent a beach house, but summer vacation is ruined when annoying Andrea shows up and develops a crush on the lifeguard.

A.J. and the other second graders do everything except play sports when they go to "fizz ed" class with their new teacher, Miss Small.

A.J. and his fellow third-graders from Ella Mentry School, including new student Alexia, go on a field trip to the zoo, where they meet a very strange zookeeper.

At the county fair, ten-year-olds Malcolm and Dandy face a real ghost in the Screaming Mansion, while at home, Malcolm's sister Cocoa's attempt to become Fair Queen has the family in turmoil.

A.J. and his friends in the second grade learn that art can be made out of anything, even garbage.