故事以二战末期为背景，讲述五人美军小队奉命守护一座法国古堡。不料城堡除了残余的敌军，一股超自然的邪恶力量也正在蓄势待发。小队众人也面临着比战场上更加残酷的威胁。

France, June 1944. On the eve of D-Day, some American paratroopers fall behind enemy lines after their aircraft crashes while on a mission to destroy a radio tower in a small village near the beaches of Normandy. After reaching their target, the surviving paratroopers realise that, in addition to fighting the Nazi troops that patrol the village, they also must fight against something else.