Claus and Lavi are back at their home, with Alvis sleeping on their bed. Claus has decided to take the mission, much to Lavi's annoyance. Alvis awakes and asks for her nanny, Gita but the woman died during their escape. Claus isn't sure how to handle it, but Lavi tells Al that Gita had to go away for a while. After eating, they settle in for the night, but the star-shaped ship finds Al in the house. Claus and Lavi have to escape, and their house is destroyed in the process. Although they don't use their engines in the waterway, the star-shaped ship still finds them. They narrowly escape, appearing to damage the star-shaped ship enough to do so. At the temple ruins, where they were to bring Al, they are attacked again and the star-shaped ship snatches Al. Claus tries to fight it with a rock and is knocked out. Just as he is about to be killed, a shot rings out. Alex has shot the pilot of the machine and saved all the children.

Exile enters Disith territory, followed by the Guild and alliance fleets. The alliance fleet loses one-quarter of its ships after Exile continues its indiscriminate attack, but Sophia orders it to continue at all costs to defeat the Guild. In the Grand Stream, Dio pursues Claus's vanship and relives their race at Horizon Cave. However, when he realizes Lucciola is not with him, Dio falls into despair and is thrown off his vanship by a gust of wind. Just as the alliance fleet falters in its attack, the Urbanus leads the remaining ships in protecting the Silvana as she makes a final attack at Delphine's ship. Alex, still a prisoner of Delphine, catches her off-guard and strangles her before breaking her neck. As the Silvana destroys Delphine's ship, Wina hears Alex's final words at her listening post. Claus and Lavie finally cross the Grand Stream into Disith, completing the feat that their fathers could not achieve. There, they find the remaining alliance fleet and bring Alvis to Exile. Claus recites all four Mysteria, to which Alvis responds, and Exile sheds its defensive cocoon to reveal a starship. Inside it, Claus and Lavie find their fathers' vanship and remains. The world they have been living in is revealed to be in the shape of an hourglass, and Exile takes Claus, Lavie, and many others to a new, conflict-free world. Claus and Lavie are reunited with Dunya and Mullin, the latter of whom has recovered from his injuries. They are joined by Alvis, Tatiana, Alister, Holly Mad-thane, and several children.

In the skies above the sacred Grand Lake, the Ades Federation declares war on the kingdom of Turan. Just when the Turan flagship's destruction seems inevitable, a Sky Pirate named Fam boldly states, "I’ve made up my mind! I’m going to steal that ship!"

The final target was the Anshar, the flagship of the Ades Federation's 1st Fleet. Now that their agreement with Tatiana has been fulfilled, Giselle prepares to leave the Silvius... but without Fam.

Fam and Giselle reach the furthest depths of the Grand Exile. There, they find Luscinia, holding a sleeping Sārā.