The story takes place in a high fantasy world, which contains an ethereal energy source named "mana". An ancient, technologically advanced civilization exploited mana to construct the "Mana Fortress", a flying warship. This angered the world's gods, who sent giant beasts to war with the civilization. The conflict was globally destructive and nearly exhausted all signs of mana in the world, until a hero used the power of the Mana Sword to destroy the fortress and the civilization. The world began to recover in peace. As the game opens, an empire seeks eight Mana Seeds, which when "unsealed" will restore mana to the world and allow the empire to restore the Mana Fortress.
