On a continent ruled by sword and magic called Kunaaan, there are three kingdoms with a fragile power balance that could spell disaster and war at any moment. Another power, the evil dragon Daganzord, also resides on the continent, and no one is powerful enough to stop him from spreading destruction and charred land in his wake. Bairo and Kismitete, and a party of wizards attempted to seal the dragon, but were foiled. This event was known thereafter as the Balbagoa Tragedy. Bairo and Kismitete's son Hiiro is saved by Giiru, and Hiiro swears to avenge his parents' deaths and trains himself with the sword. When Hiiro turns 16, he sets out on a journey to slay the dragon, and Giruu accompanies him, having no choice. Along the way, they meet many types of people, and gain companions on their journey.