The Dragonfly Empire was divided into two factions, the Fleet Faction, which advocated joining the Imperial Alliance, which claimed to dominate the world, and the Treaty Faction, which believed that they should maintain friendly relations with the Entente, which wanted to maintain the status quo. The Fleet Faction was divided into two factions, the Fleet Faction, which advocated joining the Imperial Alliance, and not missing the bus. As the trend toward joining the Imperial Alliance grew stronger, the war situation changed dramatically with the war in the skies above Jutland. As a result, Lieutenant Amelia, who is a brand new lieutenant, was sent to Bretanice, an Entente nation with which relations were deteriorating, as a military attaché together with Vice Admiral Harald, a monster of reason from the Treaty Faction! One wrong move and it would be a world war. The battle for "not needing heroes" begins, using countries, embassies, nobles, the media, and everything else. This is the full-scale diplomatic war story of military attachés, with the fate of their nations at stake!