Seven friends get together to enjoy a crazy weekend in the mountains, drinking and partying to their hearts content. The house they rent for the weekend, though, is keeping a dark secret: years ago, a young boy murdered his mother and her lover inside the house. Unbeknownst to the group, a shape-shifting evil still lurks within the walls of the secluded mountain home, waiting to be unleashed.
The first day at the house, after being dropped off by a driver, John, one of the seven friends, goes searching through the garage. He finds a sledgehammer and takes it. This is the key that unlocks that evil spirit inside the house, and the fight for survival is on.