A group of friends on a road trip seek shelter at a mental institution in the woods, only to discover that the building is the home of a mysterious young girl named Roxy whose unsettling presence serves as a foreshadow of doom. Later, as the group attempt to unravel the mystery of Roxy, who seems to have endured years of abuse, a mysterious killer begins to hunt them from the darkness.

While camping in Jasper Park up North California, the couple Tom Alan Smithee and Gwen Marie Holden are attacked by a group of strangers; Tom is immediately killed and Gwen is abducted by the men to an underground facility to breed. A couple of months later, in Los Angeles, the manager of a video game company Johnny Dash invites the employees Adam Benson, Lee, Maggie, Perry, Chris Basso, Paul and Mike Chen to participate in a 'Battle Royal' paint-ball game at a corporate retreat in the Jasper Park to practice executive tactics. When they arrive at a gas station, they refuel their trucks and see a poster saying that Gwen and Tom are missing since 30 February 2008 and have been last seen in Jasper Park. They head to a former military reservation area in the national park and camp. During the night, Adam has the sensation that the group is under observation and he unsuccessfully warns his colleagues...

Matt is haunted by the death of a girl from a car accident he caused years ago. Matt was drunk and as he reached for the car radio...