Mr. Ruhle, the school principal, has just gotten a super-duper computer. And Carlos's brother, Mikey, programs it to go a little wacky-- it's doing their chores over and over and over again! So Ms. Frizzle turns the kids into a floppy disk and sends them inside the computer to find out what has gone wrong. Join the class on a wild ride, and learn a lot about computers along the way!--[Résumé de l'éditeur].