Elodie and Laetitia live in close love and dream of having a child. As Elodie discovers that she cannot get pregnant because of a health problem and encounters financial troubles, they decide to take a roommate.
A mother moves into an old family home to undergo a rigorous treatment that she hopes will help her autistic daughter communicate. The therapy seems successful when the girl miraculously begins to speak. However, she soon discovers that her daughter has come into contact with the tortured entities of the place, who return from beyond to collect a dark debt from the past