Lucy and her young family have moved to a cottage on a quiet lane in a peaceful coastal town. Her husband is moving work but she is running away from the memory of the son she lost. She wants a fresh start, but the house is not going to let her look to the future, not when the past has so much it wants to show her. The first night in the house will confuse her. The second night will terrify her. The third will change everything, because a door to the other side has opened and they are coming...