When Arthur's third-grade class competes at the Middle Ages Fair against Glenbrook Academy, they lose at Merlin's Labyrinth, tug-of-war, and even a pie-eating contest. The only challenge left is to pull a sword from a stone. Can Arthur and his classmates show Glenbrook who the real winners are?

In chapter-book format, for children who are ready to read on their own, this exciting adventure will surely be a hit among Arthur fans.