在这部撒旦之血恐怖片中,Andy 与 Thelma 是住在马德里的一对夫妇, 一天他们带着他们的狗出去玩乐. 在路上他们遇见了一对陌生的情人 Bruno 与 Anne 并邀请 Andy 与 Thelma 去乡村的别墅. 晚上因风暴的突临, 他们于是决定留在那儿过夜. 他们拿出了显灵版以借此与亡灵交流, 但很快他们间便产生了冲突: Thelma 与 Andy 的弟弟发生了关系, 而 Anne 则为 Bruno 的自杀而责怪他 —— 但这一切只是在这所房子中将要纠缠他们的噩梦的开始...
Andy and Thelma, an urbanite couple living in Madrid, leave their apartment for a pleasant day around the city with their dog. They cross paths with Bruno and Anne, a strange couple who invite them to their foreboding country estate. A storm hits that evening and the two stay overnight. The couples engage in a bit of harmless communication with spirits via ouija board, but soon past conflicts arise Thelma had an affair with Andy's brother, and Anne criticizes Bruno over his attempted suicide. This is only the beginning of all the horrors that will haunts them in the house.
