A poor composer sells his songs to a music publisher who attributes them to his son, who sells them to a famous singer. Seeking the son, the musician's daughter will unexpectedly find a job as secretary to the singer, disguised as an unattractive and authoritative woman who effectively controls his careless lifestyle.
| Actor | Role |
|---|---|
 Josita HernánSilvia Navarro | Silvia Navarro |
 Fernando Fernán GómezSalvador Viana | Salvador Viana |
 José IsbertFabián Pérez | Fabián Pérez |
 Lily VincentiElisa Wesner | Elisa Wesner |
 Luis PrendesArmando d'Olbés | Armando d'Olbés |
| JJuan Moreno RigoBernardo Navarro | Bernardo Navarro |
| JJosé SanchízErnesto Aldana | Ernesto Aldana |
 Luis Pérez de LeónRoger Becarie | Roger Becarie |
| AAna María QuijadaDuquesa de Tusset | Duquesa de Tusset |
| EEnriqueta VillasiulEloísa | Eloísa |
| EEmilia ClementSeñora en la tienda | Señora en la tienda |
 Rosita ValeroGeorgina Navarro | Georgina Navarro |
 Rafael de PenagosTomás | Tomás |
| JJuan Álvarez BlancoGustavo Becarie | Gustavo Becarie |