Since the Toy Box was destroyed, the Debris Section go on a holiday on Earth. Hachimaki, Yuri, and Tanabe visit the Hoshino household. Meanwhile, Yuri makes friends with Kyutaro, Hachimaki's brother.

Hachimaki is left adrift in space in the middle of a solar flare and miraculously survies. But he is diagnosed with Acute Spatial Disorder and unless he can overcome it, he will be grounded from space for the rest of his life.

Debris Section has been assigned to the Moon for a month to help collect debris from the Tandem Mirror Drive disaster. In training as a finalist aboard the Von Braun, Hachimaki learns that one of his fellow candidates is planning to sabotage the mission.