The story begins with Superman, Batman, and Wonder Woman all experiencing the same dream. The dream is of someone screaming to be let out. After determining that none of the other heroes are having them, they reason that someone is attacking them directly. They start to hear the voice in the waking world too.
At the same time, a mysterious man calling himself Enigma approaches Morgaine Le Fey, and tells her that the three heroes are a `trinity`, keystones to the power of the universe itself (the keystone to the multiverse is the New Earth universe, this universe`s keystone is Earth, and Earth`s keystones are the Trinity), and convinces her to join him in taking their places by using a mystic ritual.