纳拉，一个来自城市的13岁女孩，和她的家人一起来到乡下的祖母家，试图找到治疗她小妹妹神秘疾病的方法--但她很快就会发现她的祖母并不像她看起来那样。

The film tells the story of how, in post-war Spain, Narcisa (played by Aria Bedmar), a novice with supernatural powers, arrives at a former convent, now a school for girls, to become a teacher. As the days go by, the strange events and increasingly disturbing situations that torment her will eventually lead her to uncover the terrible web of secrets that surround the convent and haunt its inhabitants.