圣诞节，米格兰一家发现全家已被神秘的金属物质包围，但究竟是什么，工业事故？恐怖袭击？核战争？在电视机上出现了“进一步的指示”，他们按照电视机的指示，展开了血腥的屠杀…...

Sealed inside their house at Christmas, a dysfunctional family receive disturbing messages through their television that pits them against each other in a terrifying battle to survive....