In 1991 Madrid, after holding a séance at school, a teen girl minding her younger siblings at home suspects an evil force has entered their apartment.

Inés and Julia are on holiday doing what they like most – snorkelling. Every night at eight o'clock the girls stand by their father and wait for their mother to call.

Laura, a Spanish woman living in Buenos Aires, returns to her hometown outside Madrid with her Argentinian husband and children. However, the trip is upset by unexpected events that bring secrets into the open.