The college student Natalie Ross goes missing and her friend and roommate Amanda Rowe accuses her ex-boyfriend Cameron McClure to the police. However nothing is proved against Cameron and Amanda's roommate Zoe decides to rent Natalie's room to share the expenses of their house. They accept the student Hayley Jones and she gets close to Amanda. When the upset Cameron threatens Amanda, Hayley defends her and they have a close relationship. Soon Cameron breaks in their house and hits Amanda; however Hayley arrives at home and hits Cameron on the head with an axe. Hayley convinces Amanda to hide the corpse, burying in the farm of her abusive father Garret Jones. Then she tries to convince Amanda to kill Garret, but Amanda refuses. Hayley kidnaps Amanda's friend Mark to force Amanda to kill her father. What will Amanda do?

While traveling from California to Bangor through a lonely road, Carrie Mitchel is advised by the gas station attendant Jimmy to rest in a hotel; however, she decides to continue driving through the night. Later she almost hits the teenager Amy Singer that is wandering on the road wounded with blood on her face. She gives a lift to Amy that tells that her friends from the Boston University Mike, Greg, Tammy and Lisa and she had traveled in a RV to Arrowhead to research the area as part of a discipline in their course. When they stopped in a gas station, the attendant Billy advised them to avoid the place in Bradford City called "Devil's Playground" by the locals. While digging in an area where a mine collapsed on 19 December 1967 killing 239 coal miners, they find preserved bones that they believe belonged to the Indians. However, when they find teeth with golf fillings and a watch on the wrist of an arm...