Thomas and Chloe meet at college, and feel an instant attraction to each other, unaware that many centuries ago they lived and loved each other then. When Thomas and Chloe are drawn into a faux-Druid cult, which meets at a mini-Stonehenge site off campus, he begins to feel a deep compulsion to protect Chloe from the danger he senses lurking there. Its leader, Dyfan, has re-named Chloe "Vala", which means 'acceptable sacrifice", and his intentions slowly become clear.

As the college year progresses, Thomas and Chloe find themselves bound to the Clan by Dyfan's strange psychic abilities. Their unlikely help comes from Chloe's perceptive art professor, Jim Walsh, and Thomas' quirky, margarita-making grandmother, Ivy, who seems to know things no one else does. The hair-raising climax takes place at Mystery Hill...where human sacrifices have happened before.