Inside Wundagore Mountain, the Concordance Engine comes to life, and the Defenders' mission snaps into crystal-clear focus. What does this miraculous machine do? What happens if it doesn't do its job? And how many more are there around the world?

Inside Wundagore Mountain, the Concordance Engine comes to life, and the Defenders' mission snaps into crystal-clear focus. What does this miraculous machine do? What happens if it doesn't do its job? And how many more are there around the world?