Mark and Rachel, a young teenage couple, are home alone while Rachel's parents are on vacation. The couple makes sure that they will get the most out of their time alone together. The night promises to be full of drinking, smoking weed, eating, sex and prank phone calling. After a few people fall victim to these prank phone calls, one individual seems to stand out. This particular phone call scared Rachel to the point of ending the prank calling for the evening. The only problem now is that Rachel's phone won't stop ringing. After a failed attempt to explain why they called him, a creepy message was left on her machine. It was now up to Mark to salvage the evening. He explains to Rachel that the caller is just getting back at them for prank calling him and he won't bother them again. But what Mark didn't know was that this individual was no ordinary prank victim.