The skilled 911 operator Jordan Turner receives a phone call from the teenager Leah Templeton reporting a burglary at home. Jordan instructs Leah to hide herself in a room, but Jordan commits a mistake with tragic consequences, affecting her career. Six months later, Jordan is a trainer of rookies in the 911 service haunted by her past. While showing the operation to the group, a new operator faces the call from the teenager Casey Welson that tells that she has been abducted. The operator panics and Jordan assumes the call, trying to calm down Casey and to get information to identify where she is and who kidnapped her. Now Jordan faces the chance of redemption and gives her best efforts to help Casey. Will she succeeds in her intent?