The City of Sapphires

Young Prince Rush is assigned to deliver two magic sapphires each day to the King of Korporia. But no sooner have Rush and his companion, the grocer's apprentice Penny Wiseglass, entered Korporia than Rush's overconfidence lands them in serious trouble. Penny is trapped in Korporia and Rush must struggle through many obstacles, both outward and internal, before he and Penny are able to complete their mission and save the kingdom.