Lloyd Lewis is moving to yet another children's home, but this one is different. The staff and children are surly and aggressive. There are poltergeists creating constant disruptions, and, in the cellar, a terrifying ghost. But Lloyd's survival has always depended on his fighting spirit and he sets about confronting the supernatural anarchy. With the help of his friend Rudi and the young gardener, Justin, an archaeological student who has dropped out from university, he links the chaos to a nearby ravaged stone circle. Justin introduces him to his professor, James Appleyard and, guided by James, he discovers the amazing cause of the disruption.