It's winter break and Molly Monroe is content to enjoy her town's annual Festival of Lights with her girlfriend Chelsea at her side. But almost immediately after the lights go up, the town's children begin to act strangely, especially Molly's own brother, Roger. When their next-door neighbors are killed in a grisly double homicide, Molly begins to suspect the incidents are linked. Now she must convince her parents and the rest of the town to take down the Christmas lights before everyone gets killed.