Six years ago, the world “ended” in a single, apocalyptic event, trapping Great Britain behind a mysterious dome of purple energy. Whitechapel, London’s last neighborhood, has persevered thanks to the protection of the “FreakAngels” — a small group of psychically-powered twenty-three-year-olds. Their fragile peace becomes threatened, however, when an exiled friend returns, exposing past conspiracies and new conflicts within their fractured, makeshift family.