The privateer crew known as the Blue Steel presses on with its mission to carry blueprints for the Vibration Warhead Torpedo to the United States, a weapon that could shift the war against the Fleet of Fog. A fresh danger appears in the Student Council, a group of warships made up of the remaining Mental Models, the humanoid avatars of the Fog's vessels, none of whom has yet crossed paths with the Blue Steel's unpredictable captain, Gunzou Chihaya. As the crew draws nearer to learning where the authority behind the enemy comes from, Iona's past begins to shed light on how the war started and why she chose humanity's side. This brand-new film blends action, drama and science fiction.