A mediocre conductor unscrupulously steals his friend's—a piano teacher's—wife. At first, the piano teacher wants to shoot his rival, but then, surprisingly, he abandons his thoughts of revenge—a piano concerto he composed in prison ultimately brings the three main characters together in peace.
| Actor | Role |
|---|---|
 Brigitte HorneyCarola | Carola |
 Viktor de KowaEwald Bergius | Ewald Bergius |
 Franz SchafheitlinHugo Müller | Hugo Müller |
 Fita BenkhoffBetty Müller | Betty Müller |
 Otto GebührProfessor Ahrens | Professor Ahrens |
 Friedrich JoloffAmerikaner in der „Colombo-Bar“ | Amerikaner in der „Colombo-Bar“ |
 Reinhard KolldehoffNot listed | Not listed |
 Mathias WiemanNot listed | Not listed |
| PPaul MederowNot listed | Not listed |