"For A.J. and the gang from Ella Mentry School, a night of regular trick-or-treating turns into the weirdest Halloween in the history of the universe"--

"Miss Z, a mysterious billionaire and a collector of rare photographs, is sending her four recruits back in time on a mission to capture, for the first time, one of the most important moments in American history--Abraham Lincoln giving his famous Gettysburg address"--

A.J. and his classmates are convinced that the new school librarian, Mrs. Roopy, has multiple personality disorder because she keeps pretending to be famous people.

Principal Klutz has invited a special guest to Ella Mentry! Her name is Miss Aker, and she's going to show A.J. and his friends how to create cool things out of materials like balloons and popsicle sticks! But what happens when they make a robot so smart, it plans to rule the world? Can anyone stop it?!

Best friends Ouchie and Squishy, who love bowling and horror movies respectively, meet the eccentric owner of a local bowling alley and try to help him save Bowl-A-Rama from the wrecking ball and a destructive psychotic lunatic.