After the death of his mother, Charlie and his dad Dave move from Watford to a remote village in the hills of Wales. But all is not right in this quiet community. The classrooms are mostly empty and no one is playing in the street. Not to mention Mrs Witcam next door, an eerie old woman who hates anyone trespassing on her property. But when Charlie is forced to befriend her as part of a school community project, he soon learns that there is an even more sinister side to her, and whether he likes it or not, he will learn the secrets that lie behind the sheets at the bottom of her garden...