At any other time Fin would have been just another boy, always in trouble. But this is the time of the angel wars and Fin is the Messenger who carries a great power, a dagger set with ancient stones. Within hours of the dagger being given to him, Fin and his friends are running for their lives in a breathtaking chase across the Highlands of Scotland to take the stones to the island of Iona. Protected only by their wits and friendship, they must fight demons, stun guards and the unpredictable sea to reach the Portal.