Hamburg, 1930: For the anniversary celebration of the music house, Lena returns to Hamburg. When the orchestra stage collapses during the event, her friend Harry is injured. Their return journey to London must be postponed for now. To Lena's surprise, her parents are not pleased about the extension of their visit; instead, they want to put her on the next ship as soon as possible. But then Lena discovers that the accident was not an accident at all, but a targeted attack. Her parents are being blackmailed. And not only is the future of the music house at stake, but also Lena and Harry's feelings for each other...