圣诞前夕,11岁女孩佐伊·韦弗(艾米丽·亚哈伯曼 Amelia·Haberman饰)刻薄的养父母在自家双双被害,身体自燃烧成了焦炭,怪异案情让警方束手无策。为查找线索,协助警方办案同样身为养母的儿童心理学家瑞秋·斯图尔特(莫妮卡·恩格塞尔 Monica Engesser饰)和正受困于婚姻危机的警探迈尔斯·奥康纳(詹姆斯·雷 James Ray饰)探访了暂时安身儿科医院的佐伊。在不断接触和调查中,瑞秋发现佐伊不仅古怪、阴郁以恐怖玩偶“圣诞恶魔krampus”作伴,还有不为人知的可怕过去。 随着自燃案件陆续发生,瑞秋意识到似乎一切都与女孩和她的玩偶有关,清算才刚刚开始······Zoe is a strange little girl with a not so imaginary friend, Krampus, who is the dark companion of kindly old St. Nicholas. Krampus has been unleashed upon a small town, and the legendary demon will seek out all the naughty people to punish them at Christmas time. No one is safe as Krampus hunts them down, tortures them and then drags their helpless souls to the depths of hell.