Jackson is always eager to visit his aunt Sarah at her anthropological digs. This time she's in England, at Stonehenge, and Jackson's particularly excited to see the massive and mysterious stone formations in person. But then he sees a young man viciously attacked and witnesses a similar savage attack on his beloved aunt Sarah. A beast no one has ever seen before is on the prowl and Jackson must rush to stop it before it can kill again. Can he solve the mystery of the inhuman monster that is stalking the countryside - before it's too late?