Teenagers Glen (Stephen Dorff) and Al (Kelly Rowan) are kinda would-be geologists. The pair get all excited by the discovery of a strange crystalline rock in their backyard. With their parents away for the weekend the pair elect to start digging into the ground around it, unwittingly unleashing a terrible force into the world. They have discovered the gate to Hell and unless they can find a way to seal it, evil will walk the Earth forevermore.