In the Ivory kingdom, an old portal has been activated due to the abuse of magic. Ancient creatures threaten to destroy the kingdom, but warriors of all Ivory's places come to the call of the king to try to recover the peace.

Mythsgate is an asymmetric game in which a player controls the creatures laying waste to the kingdom while everyone else tries to stop the carnage. During the game, the warriors have to improve their equipment and increase their power reserve to be able to defeat the ancient creatures and close the portal.