Sir Hokus, discovered by Princess Dorothy on a earlier adventure in the sleepy kingdom of Pokes, has been living in the capitol of Oz, the Emerald City. He decides to go on a quest for adventure, to serve a king, rescue a maiden, and slay a monster. All too quickly, everyone in the castle has plans to accompany the brave knight on his quest. Meanwhile, a young boy, Speedy, working on an invention with his uncle in America, finds himself on a trip of his own when the invention runs away with him! Sounds like a new Oz adventure and an exciting quest all rolled into this new tale, The Yellow Knight of Oz.