On the Efi Dorg Spaceship, the Gezon-Reco Company retrieves another Pivot Stone fragment from Earth, but they are frustrated at their slow progress of collecting all the fragments, plus they have yet to locate the important Key Stone. At the end of class, Mika notices that Kennosuke is doing better at English literature than Yukina. During a summer training camp, the GAUS crew put Kennosuke, Yukina and Ryoto through a series of rigorous physical training. However, Yukina and Ryoto struggle to keep up the pace, and Ryoto himself is forced to withdraw after injuring his leg. After Kennosuke and Yukina undergo intense educational studies in the classroom, they train in the shooting range, though Kennosuke uses a sword as a substitute. They even simulate mountain hiking while in a swimming pool, but a shocking accident leaves Kennosuke and Yukina to take a break. In the meantime, the United Nations Kurobe Laboratory experiments with gravity control for Tom and Shenmei in the GAUS 1 to walk on water with limited success. By the end of summer training camp, Yukina eventually improves her fitness. Kennosuke is given back his sword and is unshackled from his shock collar.