前警官Asger Holm接到一通电话，来自一个被绑架的女人，当电话突然挂断后，搜寻那位女性的行动正式展开。这通电话是惟一的线索，警官需要与时间赛跑，拯救她于危难之中，然而他逐渐意识到他所处理的案件远比自己想象的要复杂很多。Alarm dispatcher Asger Holm answers an emergency call from a kidnapped woman. When the call is suddenly disconnected, the search for the woman and her kidnapper begins. With the phone as his only tool, Asger enters a race against time to save the endangered woman. But soon he realizes that he is dealing with a crime that is far bigger than he first thought.