本片基于安德鲁·迈克尔·赫利所著小说，探索在超自然民间传说统治的世界中遗传的创伤和损失，设定在1970年代的英格兰乡村，理查德和朱丽叶夫妇过着田园诗般的家庭生活，这种稳定在他们儿子伊万开始表现出性格失

As devout Jehovah's Witnesses, sisters Alex and Luisa and their mother, Ivanna, are united in The Truth. Alex looks up to her confident older sister, while striving to follow in Ivanna's footsteps as a 'good Witness&