 The emir of the Saracens, impressed by the beauty of Horn, sets him and his companions adrift in a boat.In time, they reach the land of Westernesse, where they are taken in by King Ailmar.Upon reaching adulthood, Horn and the king's daughter, Rymenhild, fall in love and become betrothed; Sir Athelbrus, the castle steward is entrusted by the princess as her go-between.