When a string of murders rattles their Brooklyn neighborhood, Alec and his best friend Jesse decide to ride out the night together. What begins as restless conversation and nervous jokes soon gives way to something darker, as news alerts, strange noises, and flickers of movement outside begin to chip away at their sense of safety. Trapped between the four walls of a cramped apartment, the friends can’t tell if they’re imagining things—or if the danger they fear has already found them.