On Azuma Island, the Prime Empire, commanded by emperor Gustav Prime, is preparing to conquer the kingdom of Taksa, but it does not intend to go into battle itself due to the enemy's potential, so it draws help from the country of Shizuroba, which is ruled by a consulate unpopular among its citizens. The leader of the revolutionaries of this country, Harold Gusman, upon learning of the loss of the consulate's troops, intends to restore the old order in the country and avenge the deceased king, so together with his companions, he prepares for a possible uprising.