Princess Arete is confined in her castle tower by her father, who seeks to marry her off to a suitable suitor. Knights compete in a tournament to win her hand, but Arete is uninterested, instead desiring to meet the common people and see the world beyond her confines. She finds solace in books about distant lands and the magic of the ancient sorcerers, whose artifacts are the focus of the knights' competition. The arrival of sorcerer Boax in a remarkable flying machine offers Arete an unexpected opportunity to escape her arranged fate.