After the clash with Kugel's fleet, six months drift by. The fleet, freed from the oppressive machine caliber Striker, prepares to merge with the Gargantia fleet, welcoming fresh faces on board. Amidst salvage duties, Ledo delves into the mysteries of the ancient civilization, pondering humanity's exodus from Earth and the conflicts with the Hideous. His passion for archaeology grows as he unravels the past. Meanwhile, Amy mentors Leema, a newcomer from Kugel's original fleet, now embracing a new start within Gargantia.