Life is secure and peaceful for young Prosper, second son of Gerontius, until the day Prince Gorthyn arrives with his hunting party. Prosper's unusual daring in the hunt catches the prince's attention, and he promises to make Prosper his shield-bearer when he comes of age. Two years later, three hundred princes are summoned to the king's fortress at Dyn Eidin, where they will prepare to fight the Saxon forces which are gaining strength in the east...