London, 2014 Jake Turner, middle-aged and world-weary; is on his way to give evidence in an Old Bailey gangland murder trial, when he gets wiped out by a Brixton-bound tube train. An indeterminate amount of time later, he comes to in a brightly lit “warehouse.” His strange new surroundings are inhabited by a diverse set of traveling shuffling and seemingly aimless husks of their former selves. Trying to make some sense of his predicament, he begins to make forays into the cavernous interior of his new home…