Hundreds of years ago, The Ancient God, Bahamut The Destroyer broke free from his captivity. He brought fiery discord across the Land Icyria. All the warriors of Icyria stood together and fought back. At last Bahamut was sealed in a huge rock and banished to another dimension.
After that Holy War, peace came to Icyria again. All the creatures worked together to bring back civilization to this land.
But before long, amounts of dragon monsters went crazy. They destroyed everything they saw with their ruinous power. At this moment, some young adventurers came here.They were born with the supernatural powers with which they can talk with Dragons and train them. So they are proficient to hunt down Evil Dragons with their Legacy. They are「Dragonborns」.
Could they save Icyria? Would Bahamut come back to life again? The War between Humans and Dragons begins……