Although born to rule, Aidan lives as a scribe in a remote Irish monastery on the far, wild edge of Christendom. Secure in work, contemplation, and dreams of the wider world, a miracle bursts into Aidan`s quiet life. He is chosen to accompany a small band of monks on a quest to the farthest eastern reaches of the known world, to the fabled city of Byzantium, where they are to present a beautiful and costly hand-illuminated manuscript, the Book of Kells, to the Emperor of all Christendom. Thus begins an expedition by sea and over land, as Aidan becomes, by turns, a warrior and a sailor, a slave and a spy, a Viking and a Saracen, and finally, a man. He sees more of the world than most men of his time, becoming an ambassador to kings and an intimate of Byzantium`s fabled Golden Court. And finally this valiant Irish monk faces the greatest trial that can confront any man in any age: commanding his own Destiny.