An exile from his native land following the failed revolution of 1848, the impoverished Richard Wagner is in Zurich working on his opera Tristan und Isolde. There he meets Otto and Mathilde Wesendonck, ardent admirers of his music. Wagner's passionate and scandalous affair with Mathilde, whose poems he set to music, is explored in this feature film by director Jens Neubert. After their relationship ended, Wagner left Zurich for Italy, forever remembering Mathilde as 'my first and only love'.