The airship is about to collide with another one, but the engines are full of sand and the ship will have trouble getting rid of it. The airship's engines have clogged up with sand, and the engines will have to start over again. It's not like they'll be able to get rid of all the sand they've made them eat. They're not alone, though, because they know each other. They see their father blocking the elevator that leads to the palace. He's one of the guardians of the guild, which means he's in charge of the excavation of the palace if something ever happens to him. It used to be that everyone in the seven worlds threw things away and ended up in the ring, but after the war with the nemo, the trade in raw materials became scarcer and more expensive. So the cities started digging around to salvage all the things that were thrown away. They were wondering where Gatta was, so they asked him to help them. He won't help them, but he'll help them if they need him. He doesn't want them to leave him, he just wants them to do something for their families.