The Kingdom of Xarooda clashes with the O'ltormea Empire, forcing Ryoma Mikoshiba to take to the battlefield! The war has already started, but Xarooda needs reinforcements, so Ryoma travels to Helnesgoula to speak with Queen Grindiana, the Vixen of the North. She seems uninterested in helping a country she'd rather take over, but Ryoma sweetens the deal with an alliance between Helnesgoula, Xarooda, Myest, and Rhoadseria, along with a trade treaty too lucrative to resist.

Now, with even Sir Rolfe, the captain of O'ltromea's royal guard and the Emperor's Shield, deployed to the fighting, Xarooda's final, fateful battle with O'ltormea is on the verge of beginning. However, Ryoma's schemes throw more than one wrench into the empire's plans! Will the Devil of Heraklion prevail in war again? Or is Ryoma's short-lived time as governor of the Wortenia Peninsula coming to an end?