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.

Dolph is replaced as director of the Technora Second Division and the new director wants to shut down the Debris Section while the crew of the Toy Box find a secret INTO orbital mine.