Arc the Lad: End of Darkness takes place five years after, yet in the same world as Arc the Lad: Twilight of the Spirits. Players take the role of Edda, a young man whose youth is marked by a "boring island life". His serenity is shattered, however, when he meets Kirika, a rude young woman, on the beach. Shortly after, Edda tries to help a hunter capture vicious criminals, but the latter gets 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, and realizing a sense of responsibility to save the weakened world, he sets out on a remarkable journey that will ultimately pit civilization against nature.