Abby in Oz (Whatever After Special Edition #2)

Abby, her two friends Robin and Frankie, and the annoying Penny, are in their treehouse arguing about what to do for their special school project when a tornado appears out of nowhere, scoops up the treehouse, and transports them all to the land of Oz, where they are soon confronted by the Wicked Witch of the East (who is very much alive, and rather angry), and must save a story that is going completely sideways--all because of the evil Gluck.