The Stones of Ravenglass

Timoken, the lost king of a secret kingdom that was destroyed by wicked viridees, believes he has found a new home in a castle in medieval Britain. But when an evil steward takes control of the castle, he imprisons Timoken and wreaks havoc on surrounding villages. With the help of Gabar the talking camel, a mysterious wizard and a friendly dragon, Timoken escapes and embarks on a journey to find and rescue his friends - and build himself a kingdom to call home for good.