Matt, a fun loving high school student, joins his twin sister, Ashley, and their best friend, Saadia, for a weekend of snowmobiling and cross-country skiing with Saadia's Aunt Irene, an Investigative reporter. On their way to Irene's cabin, they meet an ex-con biker who becomes their unplanned travelling companion.
Their first outing takes them to the site of a recent explosion where Matt stumbles upon a small gold cross emblazoned with a fleur-de-lis. A retired curator identifies the origin and true value of the cross. That night, the cross is stolen. The three teens have their suspicions about who the culprits are, but when they go back to the explosion site to look for clues, they set off a chain of events that puts all their lives in danger.