A dysfunctional family awake on Christmas morning to discover they’re sealed inside their house by a mysterious black substance. On television, a single line of text reads: “Stay Indoors and Await Further Instructions.”

On the outskirts of Birmingham and the margins of society the Billingham family perform extreme rituals and break social taboos as they muddle through a life decided by factors beyond their control. At times shocking and laced with an unsettling humor, three episodes unfold as a powerful evocation of the experience of growing up in a Black Country council flat.