[@RokkuHoshi], Accepted; you don't have a Keyblade?

Also, summary:

Basically, we went to the Hunger Games world, but found that the enemy has occupied it with troops from Fallout: Apocalypse Averted and Space Station 13, the latter which is floating above Panem's orbit, accompanied by a fleet of Gummi Ships. The PCs are trying to board Space Station 13 itself, where an ambush is waiting for them.

Also, said PCs are accompanied by a fleet of friendly Gummi Ships and an army, the latter which has teleported down to Panem to fight the enemy. Anyway, since travel through worlds is more tolerated here than in Canon!KH, perhaps you could be in Panem for reasons of your own, and got caught in the war?