黒きMS“バンシィ”に急襲され身柄を拘束されるバナージ。八方塞がりの状況下、“ユニコーンガンダム”が開示した『ラプラスの箱』への新たな座標を秘匿し続けるバナージに、ロンド・ベル隊司令ブライトは歴代のガンダムパイロットが見せてきた矜持と可能性を見い出し、その助け手は彼と共に戦った旧知の人物へと繋がっていく。一方、ローナンからマーサに引き渡されたミネバは、バナージに口を割らせるための駒として超大型輸送機“ガルダ”へ移送されてしまう。『箱』を巡る戦場は、超高々度の翼上へ、やがて再び宇宙へ飛翔する…。
After neutralizing the Delta Plus, the newly arrived Banshee captures the Unicorn and returns it to the Ra Cailum, where Riddhe encounters and attempts to question Alberto Vist of Anaheim Electronics' motives, only to be ignored. Meanwhile, on the Garuda, Martha requests Mineva's assistance to coerce Banagher's cooperation in disclosing the location of Laplace's Box. On the Ra Cailum, Bright speaks with Banagher and comes to terms with the latter's actions, before learning of the Federation's covert deployment of the new Dogosse Gier-class battleship General Revil. He sends orders to the Nahel Argama, instructing them to rendezvous with the Garencieres.
Il Gundam Unicorn e Banagher sono ora nelle mani delle truppe della Federazione, grazie anche all'intervento dello Unicorn nero pilotato da Marida Cruz. Quest'ultima, in seguito al lavaggio del cervello, obbedisce direttamente ad Alberto Vist. L'accordo tra la Federazione e la Fondazione prevede la consegna del Gundam e del suo pilota alla famiglia Vist.
Banagher é vencido pelo black mobile suit Banshee e detido. Entretanto, Martha quer a ajuda de Mineva para fazer Banagher falar.
Banagher est battu par Banshee et fait prisonnier. De son côté, Martha demande à Mineva de l'aider à faire parler le jeune homme.
