The film follows Iraq-based American civilian truck driver Paul Conroy (Reynolds), who, after being attacked, finds himself buried alive in a wooden coffin, with only a lighter, flask, flashlight, knife, glowsticks, pen, pencil, and a mobile phone.
Paul Conroy wakes up six feet underground with no idea of who put him there or why. Buried with only a cell phone and lighter, his worst enemies are bad reception, a rapidly draining battery, and low oxygen. Paul only has ninety minutes to be rescued.