There was a country called Ishtan 200 years ago. The country suffered significant damage from monsters that emerged from a labyrinth.  The king who was worried with that invited a famous magician to seal off the entrance of the labyrinth. For safely closing the labyrinth and made the monsters threat disappear, the king was hailed as the wise king. However, 10 years later, the seal was broken by tsunami of monsters which overflowed from it and destroyed the entire country in a day. To this day its known as The Nightmare of Ishtan.