故事的主角是年轻警探杰特与他的女友。作为一个印第安纳州的菜鸟警察，杰特照例前去参加“扑克之夜”。在“扑克之夜”上，他与州内几位最好的警官一起打扑克，警官们把他们自己遇到的故事，自己的成功和失败告诉他。一日杰特与女友遭到一名凶恶的变态罪犯绑架，头戴面具的绑架犯将两人锁在地下室里，杰特将利用“扑克之夜”上学来的办法，从这场危险的猫鼠游戏中逃出生天，并救出自己的女友。
The film opens in a bleak police station where celebrated war correspondent Kate Rafter (Seagrove) faces questions from a psychiatrist, Dr Shaw (Kurylenko), as they work through the painful events of Rafter’s life. A horrific incident in war-torn Iraq and the death of her mother (Steed) have brought a haunted Rafter home to Herne Bay, a place she believed she had escaped forever. Her resentful sister (Friel) has not made her sister welcome and her forbearing husband Paul (Miles) fails to broker peace. Whilst packing up her mother’s belongings from her childhood home, Rafter comes to believe there is something strange and terrifying happening in the house next door.
本片是《从地心窜出》系列的前传，前三集中肆虐人间的巨型怪物最早出现在此，位于内华达的一座盛产银矿的小镇，由于矿工纷纷离奇死亡，很快就成为空城，具有贵族身分的加默拥有当地的采矿权，雇用了外籍佣兵凯利来和这群怪物打交道，以免断了自己的财路，不过在镇上肆虐 的并非人类，加默和镇上幸存的镇民必须全副武装，以和这些巨型怪物開始了正面对决...
