Spire Dock

The Spire Dock is an area in SkyTown. Though it's real purpose is to hold a completed Theronian Bomb. Once you have all three peices the dock will store the bomb and you must ride along with protecting it from Space Pirates. Aurora Unit 217 states that the dock must be manually dropped onto the Leviathan Core. During your escape though the escape pod malfunctions and you must go underneath the dock to repair the destroyed curcuits. After this incident you will be able to battle Helios.