When Loren Cofton and Tracie Martinez visit the remote hills of northeastern Nevada on a cross-country drive celebrating their high school graduation, the fun vacation quickly morphs into a perilous adventure. As the relentless teens uncover a horrifying trail of evil, they put their own lives in dire jeopardy. Will the girls be able to rescue the people of Corsonia - or will Loren and Tracie become the town's next victims?