从前有个人去买了一只鸟，结果回家才发现它不会飞。于是他决定教鸟飞，结果教了一整天也没学会。最后，这个人抱着鸟说：“好吧，如果你不会飞，那我们还是来学游泳吧！”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.
