Ireland, 1209. A small group of monks begin a reluctant pilgrimage across an island torn between centuries of tribal warfare and the growing power of Norman invaders. Escorting their monastery's holiest relic to Rome, the monks' progress is seen through the eyes of a pious young novice and a mute lay brother with a violent past. As the true significance of the bejeweled relic becomes dangerously apparent, their path becomes increasingly fraught with danger.