She is a tomboy who loves to ride horses and sword fight. Several times in the story, Aerin asks to ride into battle with her father. The main antagonist in the story is an evil mage named Agsded, the leader of the North kingdom. With the help of his evil companions, Agsded has stolen the Hero's Crown which is the greatest treasure and secret strength of Damar. Throughout the story, Asded initiates several sinister acts toward Damar, such as awakening a huge, enemy dragon, stirring up a rebellion in one of the provinces, and waging war against the kingdom.
Many secondary characters contribute to the story.
King Arlbeth, the ruler of Damar who was seduced by a witch woman from the North, is Aerin's father and only living parent. Aerin's mother, the witch woman, died shortly after Aerin's birth. Many Damarians do ot trust Aerin because her mother was from the North. Tor is Aerin's boyfriend and an accomplished sword fighter. He is the first sola of Damar, which is like a knight and will some day be king.