In this chapter, we learn that the incarnates are afraid of the humans, and that they are trying to find a way to destroy them. In order to do so, they need the help of the human race, and the only way they know how to do this is by killing the humans. The only way to do that is to destroy the s, and this is what they're trying to do. They've been trying to kill the humans for a long time, but they can't, because they've lost their humanity. They need to find another way, they say, and they need help from the people. This is the last time they'll be able to do it, and it's their last chance.