Arc the Lad: End of Darkness takes place five years after, yet in the same world as Arc the Lad: Twilight of the Spirits. Edda is a young man whose youth is marked by a "boring island life", but his serenity is shattered when he meets Kirika, a rude young woman, on the beach. Shortly after, Edda tries to help a hunter capture vicious criminals, but when the hunter is killed, Edda notices Kirika standing nearby, and his suspicions begin to grow about the mysterious young woman. Edda who has awakened as a full-fledged exorcist becomes a hunter himself. Realizing a sense of responsibility to save the weakened world, he sets out on a remarkable journey that will ultimately pit civilization against nature.