Bookish college student Dana is looking forward to a jaunt into the great outdoors with blonde friend Jules and her jock boyfriend Curt, and bong-smoking slacker Marty.

Curt invites his shy buddy Holden, principally as a date for, Dana, and the thrill-seekers head into the mountains to a remote log cabin.

Meanwhile, deep within an underground bunker, scientist Richard Sitterson and Steve Hadley stare at a bank of CCTV screens, which seems to be following the students towards the cabin.

They invite the team to bet on the quintet’s chances of survival...