Two men wake up at opposite sides of a dirty, disused bathroom, chained by their ankles to pipes. Between them lies a dead man loosely clutching a hand-held tape player and a handgun. Each finds a tape the perfect fit for the player in their back pocket. They play the tapes. One is threatened, the other isn’t. But they have a task: One must kill the other by 6:00, or his wife and daughter will die.