Colonel Vangarre decides to send Reyn to fetch Ether Cylinders for the Mobile Artillery as a punishment for being late to his drill. As Reyn would rather not go by himself, he asks Shulk to come along. Fiora initially ignores them, but rejoins at the entrance to the Tephra Cave, near which the Cylinder Hangar is located. Inside the hangar, they encounter and defeat two Ancient Machines and recover the cylinders for the Mobile Artillery. Shortly afterwards, the Mechon attack Colony 9.