In the meantime, the men are busy trying to figure out a way to stop the advancing army from destroying the tunnels and the tokyo. They're not sure how to do it, since they're trapped in the "nether" , and they don't know where to find a place where they can send the heat. They decide to take shelter under a sister's house, which is in the middle of the Tokyo nether. They can't figure out how to get the heat out of the nether because it's so vast, but they'll figure it out later.