In a high-rise Philadelphia office building, a group of five strangers finds themselves trapped in a malfunctioning elevator. Among them are a dismissive mattress salesman, a tough security guard, a war vet who has become a mechanic, a young woman who shoplifts, and a mysterious older woman. As tensions and anxieties rise within the confined space, unsettling and supernatural occurrences begin to transpire. The group starts to suspect that one of them might not be who they claim to be and could be linked to a powerful malevolent force.

Simultaneously, outside the elevator, Detective Bowden and his team work tirelessly to rescue the trapped individuals. Bowden, already dealing with personal trauma, becomes deeply involved in the case and starts noticing inexplicable patterns and frightening clues that suggest a connection to something far more sinister. The stakes escalate as Bowden races against time, grappling with his own demons and the possibility that a malevolent entity might be orchestrating the chaos from within.