Cassie Blake goes with her grand mother in the town of Chance Harbor, Washington, after her mother dies in a fire. Terrifying and strange things start to take place, as she must know her high school classmates. They are all descended from witches, plus complete a brand new production of the key Circle and they've been waiting to join them.  What they do know is that forces are at play and Cassie's mother's death might not have been an accident.