影片改编自艾拉·莱文的同名小说，讲述1968年著名恐怖片《罗斯玛丽的婴儿》的前传故事。年轻舞者Terry Gionoffrio（朱莉娅·加纳 Julia Garner 饰）遭受了毁灭性伤害，当一对富有的老夫妇承诺给她成名机会后，她发现自己被黑暗力量所吸引。

After a car accident leaves her boyfriend in a coma, April’s panic attacks return and make her life a living hell. However, once she accepts the kindness of a stranger trying to help her, she realizes that he might not be the stranger she thought he is.