Will is a New Orleans-based bartender who works at a run-down cockroach-infested bar. One evening, Alicia, her boyfriend Jeffrey, a drunk Eric, and a group of college kids enter the bar. Eric gets into a fight with another guest, resulting in Eric being stabbed in the cheek with a broken bottle. The kids leave the bar in a panic and Will discovers one of them has left their phone behind. Will returns to his house, which he shares with his student girlfriend Carrie. While inspecting the phone, he receives messages from someone called Garrett, who claims that he is scared and something from the “tunnel” is following him.