Bucock's fleet advances through the Müller fleet while being pursued and surrounded by many others. Bucock's Alliance fleet is unable to charge and kill Rienhard. Hilde advises Reinhard to offer surrender to Bucock. Instead of accepting defeat, the Alliance officers toast to friendship and democracy. Afterwards, the Imperial fleet decimates all remaining Alliance ships. The Imperial victory celebration is cut short when news of Lutz's defeat at Iserlohn is received. The situation has changed for the Imperials if the plan was coordinated. The Imperial fleet would have cut off supply lines if Phezzan fell as well. With that possibility, Reinhard could have underestimated the importance of Iserlohn. Countering the panic, Hilde points out Yang would not have sacrificed his allies for a stall. The Imperial forces thus resumes their course for Heinessen.
帝国軍の大艦隊を手玉にとり、一時優位に戦っていた同盟軍であったが、帝国軍の擁する兵力や物量の差には勝てず、次第に攻守が逆転する。恒星風を受けたアイゼナッハ艦隊の間隙を突き、ブリュンヒルトへと迫ろうとする同盟軍だったが、ミッターマイヤー艦隊、そして遅れて戦場に現れたビッテンフェルト率いる黒色槍騎兵艦隊に阻まれ、ついに戦力が尽きてしまう。ヒルダに再三寛恕を求められたラインハルトは、降伏勧告を出すが……。
讓帝國軍的大艦隊陷入混亂，一時曾取得優勢的同盟軍，最後還是無法贏過帝國軍所擁有的龐大兵力與物資，攻勢也漸漸遭到逆轉。同盟軍原本打算趁著艾齊納哈艦隊遭到恆星風襲擊的空隙突圍，並對布倫希德展開追擊，但卻遭到米達麥亞艦隊，以及遲到的維登菲爾德所率領的黑色槍騎兵艦隊阻擋，最後終於無力抵抗。在希爾格爾的懇求下，萊茵哈特雖然對比克古提出了投降勸告，但是…。
