The unsuccessful composer Daniel Mogge meets the photographer Eva through his runaway dog Blasius. He falls in love with her and a romance begins between the two. The envious neighbor Grusius, who is feverishly waiting for submissions for musical works, finds them through the open window: Mogge composes and Grusius steals. When Mogge hears his piece on the radio, the events come thick and fast.
| Actor | Role |
|---|---|
 Sonja ZiemannEva | Eva |
 Walter GillerDaniel Mogge | Daniel Mogge |
 Doris KirchnerRita | Rita |
 Günther LüdersGrusius | Grusius |
| CCarl-Heinz SchrothVan Eck | Van Eck |
 Helen VitaPyjama-Dama | Pyjama-Dama |
 Margarete HaagenÄltere Dame | Ältere Dame |
 Agnes WindeckFrau von Quernheim | Frau von Quernheim |
 Liesl KarlstadtFrau Nöske | Frau Nöske |