After visiting a house in Amityville, Keith finds himself suddenly transported to another realm within the home, with no way to get out. Every door he tries leads him back into the very part of the house that he first found himself in.

A rather hapless dude buys a backpack at a garage sale. When people around him turn up dead, he comes to believe his new accessory may be to blame. Tracking its history, he discovers it has connections back to a haunted house in a small town called Amityville...