After the tragic death of their baby girl, Martha Conroy (Samantha Morton), the psychologically weak mother, and her husband, Thomas Conroy (Steven Mackintosh) reach a distant Irish village. There, they decide to adopt a troubled and orphaned autistic girl called Daisy. Daisy is very reticent and greatly agonized by the violent death of her parents. But, she slowly adapts to her new environment. But, as a chain of bizarre happenings take place that are related to Daisy. Martha and Tomas also start to hear gossips from the neighborhood that Daisy could be something far more malicious and dangerous than she appears to be.