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.”

When passengers on a train are attacked by a creature, they must band together in order to survive until morning.

Ruthless killer for hire (Danny Dyer) breaks the rules of his profession and falls for a beautiful young woman. Discovering the notorious gangland brothers (Martin and Gary Kemp) had hired him to kill her father, his world breaks down and he must turn against his criminal employers and their gang to save the woman he loves.