The story takes place in the winter sports resort of St. Moritz in Switzerland. When the train Edwin and Konstanze are waiting for gets stuck due to a snowdrift, they set off on skis to catch up with it. While Konstanze wanted to pick up her cousin Bob from the station, Edwin was waiting for his fiancée Mara Andersen. But before they reach the station, the train continues its journey. Mara misunderstands the situation and believes that Edwin is traveling with the strange woman. Edwin is able to dispel her concerns, while Konstanze shows increasing interest in him. Based on the novel of the same name by Rudolf Stratz.