Vagan sleeper agents surface across the planet and the surprise offensive they trigger finally brings the war down to Earth. Flit Asuno answers by activating the just-finished Gundam AGE-3 and handing it to his grandson Kio, who signs on with the battleship Diva's mobile suit squad exactly as his father and grandfather did before him. This manga follows the third generation of the Mobile Suit Gundam AGE story.