Jack, Gwen and Oswald confront Jilly and the Mother in Shanghai, while Rex and Esther travel to Buenos Aires. They discover that the Blessing is a seam of apparent nothingness which runs through the heart of the planet and may be just as old, connected in some way to mankind's morphogenic field. This is the mechanism by which the Three Families changed humanity, using Jack's blood to render the Earth's population immortal. But in order to reverse the Miracle, all of the Torchwood members will have to stare death in the face... and not everyone will survive the ordeal.