Radius, son of Sir Cumference and Lady Di or Ameter, wants to be a knight more than anything. To earn his knighthood, he needs to venture alone on a heroic quest.
With only a family medallion for luck, Radius dodges dangers and dragons. The ultimate challenge lies in a mysterious castle with a maze of many angles. Which way would you go if you were Radius? With the medallion at the back of the book, you can join in on the adventure!