The DioField Chronicle is set in the world of DioField, an island located in the ocean during an era of war and complex politics. The story begins with battles between various powerful empires. In this world, magical technology and diplomacy are used as tools to wield power. The narrative follows the Blue Foxes, a mercenary group that becomes embroiled in the conflict between the empires and those in power. The story develops with challenging themes involving warfare, betrayal, and the destruction of powerful enemies.