When Marjorie went to live with her frosty maiden aunt, she couldn't imagine the adventures she would have with dragons - good and bad - and all the strange creatures that live in a mysterious land beneath the Tarn. The spunky 9-year-old redhead forges an unlikely friendship with an insecure young boy named Rufus who lives with his crusty grandfather next door. When Jorie - for that is what she prefers to be called - finds a dusty ancient book about dragons, she learns four strange words that will send the two of them into a mysterious land beneath the Tarn, riddled with enchantment and...

When Jorie and Rufus are reunited after a year, each one having gone abroad to France and Germany to study language, they are summoned to help their beloved friends below the Tarn to rescue the Great Wizard, who has been kidnapped. With no idea where he has gone, the children dive back into the Tarn, back to the land of Cabrynthia. Taking the Magic Stones with them, they set out immediately to find the Great Grootmonya, soon learning that he has been imprisoned in a cell atop a steep mountain in the evil land of Shyloxia. Their mission is fraught with fierce fights and entanglements as Rufus...