Thefilmtellsthestoryofhow,inpost-warSpain,Narcisa(playedbyAriaBedmar),anovicewithsupernaturalpowers,arrivesataformerconvent,nowaschoolforgirls,tobecomeateacher.Asthedaysgoby,thestrangeeventsandincreasinglydisturbingsituationsthattormentherwilleventuallyleadhertouncovertheterriblewebofsecretsthatsurroundtheconventandhauntitsinhabitants.

度过了奇异的童年后，娜西莎成为一名见习修女，并开始在一所曾是修道院的女校教书，而那里潜藏着某种可怕的东西。