The mysterious world of Arx has been shrouded in darkness ever since the sun disappeared in the year 226 and the son of King Poxsellis moved the whole city underground into the dwarf mines. There are over 40 different races that co-habit the mines including goblins, dwarves, ratmen and giant spiders and tension between them all is building. Now the evil cult of Akbaa seeks to raise a terrifying god to rule the land. Travelling from another dimension and suffering from total amnesia, the player is confronted by a world on the brink of disaster and must save both himself and Arx before the force of evil is summoned to impose his reign of terror.