In the desert of Northern Arizona is a research facility and an observatory that never opens its doors.

Stranded there for the summer with her distant father and her hyperactive brother, sixteen-year-old Katy is planning her escape. Then the incident happens.

Now she, her brother Ben, and three others, the children of the scientists, must discover what their parents have created, and why strange lights dance across the night sky while people are possessed and attacked by a creature stalking the grounds.