It is winter in Area X, the mysterious wilderness that has defied explanation for thirty years, rebuffing expedition after expedition, refusing to reveal its secrets. As Area X expands, the agency tasked with investigating and overseeing it--the Southern Reach--has collapsed on itself in confusion. Now one last, desperate team crosses the border, determined to reach a remote island that may hold the answers they've been seeking. If they fail, the outer world is in peril.