The world has always been as we know it. In the past, humans lived together with mythological creatures in a peaceful atmosphere until the Hunting Era came. As a result, gods and wizards created a new world for creatures to live in peace: Gruhmnion.

'The kingdoms of Gruhmnion' tells the life of those mythological creatures a century after the Creation. Everything seems to fit in this new life. However, the new world's leaders, the High Wizards, learned the tragic news of the kingdom of Decodeon: a group of rebels has started a rebellion. They will soon find out that it's not just a riot but the beginning of a catastrophic conflict that will put an end to peace and prosperity in all the kingdoms of Gruhmnion.

'Fantasy is far from being an illusion, for it remains hidden from the eyes of those who sent it into exile'.