Jinto and Lafiel are riding on the lightly-armed transport ship Bokbrusue and navigating at the planar space of the Hyde System. Jinto was officially appointed to govern the Hyde System as Earl, which returned to imperial rule after the Union retreated. However, the government of Martine, Jinto's motherland, is resisting obstinately against the Empire. Meanwhile, the First Devastation Fleet, formed with a new ship type called Attack Vessel, is traveling to the Hyde System for drilling practices.
「狩人作戦」の中、ロブナスIIで反乱に巻き込まれ、捕らわれてしまうジント。生還を果たしたジントは軍を離れることに。一方、星界軍ではアトスリュアのもと、第一蹂躙艦隊が編成されていた。
