Trish (GINA PHILIPS) and Darry Jenner (JUSTIN LONG) are normal siblings who are driving home from college through the middle of nowhere. For a while, their trip is unremarkable, but that changes when an unidentifiable madman tries to drive them off the road in his old, souped up truck. Narrowly avoiding being killed, the two regain their composure and return to their trip, only to pass the madman apparently dumping bodies - tied up in bloody sheets - down some large pipe in the ground.
After another perilous encounter with the truck driver, Darry convinces Trish that they must go back to the pipe just in case what they saw was real and any of the victims might still be alive. She reluctantly agrees, and so they return to the pipe on the grounds of an old and dilapidated church. After hearing what he believes to be a voice at the bottom of the darkened pipe, Darry has Trish lower him part of the way into it for a better look, but a surprise causes her to let go and he slides down inside it.
There, he finds scores of bodies with wounds that have been crudely stitched together and, after a few tense moments, escapes and heads off with his sister to look for help. As they try to get the police to believe their story and the two receive an odd phone call from a local psychic, Jezelle Gay Hartman (PATRICIA BELCHER), as well as have a creepy encounter with an old woman (EILEEN BRENNAN) with many cats, Trish and Darry try to avoid The Creeper (JONATHAN BRECK) who takes on more supernatural characteristics as he continues to pursue them.