Originally Posted by AOTKorby
Madara keeping a tunnel network for his HQ isn't actually terribly stupid. If that's the case, it just should have been mentioned.
Wait a minute..... what if Madara's tunnels resemble an intrinsic design that must be completed in order for the juubi to be reborn from the souls of the Fire country, thus placed the rest of the Naruto-verse under the Infinite Tsukuyomi.
Then Ed and Alfonse show up out of some cross-dimensional portal, kick everyone's asses, and then go back to their home world, correcting the shit hole that Kishi has allowed his creation to become.
Alchemy at it's finest.