Hayato is the last descendent of the Great Hayato, a legendary member of the Dragon family that fight against the evil Warlock centuries ago. On this battle, Great Hayato recovered the 5 Secret Scrolls and the Sacred Sword of the Dragon King.
On this journey, the Evil Warlock called Yonensai, returned from the Demon World searching for vengeance annihilating the remaining Dragon family descendents. Hayato, equipped with the Sword of the Dragon King, cross the land dominated by Evil Entities, Warlocks and Wicked Beasts to revenge his master, killed by the Evil Warlock henchmen and also to save his beloved Sakura that was kidnaped by the Yonensai, the evil Warlock itself.