Misunderstanding comedy in a girls' boarding school that requires its teachers to be married, causing some to just pretend they are.
| Actor | Role |
|---|---|
 Lolita TorresMaría del Carmen Vallejo / María del Carmen Pérez | María del Carmen Vallejo / María del Carmen Pérez |
 Alberto DalbésDoctor Marcelo Carracedo | Doctor Marcelo Carracedo |
 Francisco ÁlvarezDon Martín (abuelo) | Don Martín (abuelo) |
 María ArmandDoña Mercedes (abuela) | Doña Mercedes (abuela) |
| JJosé ComellasGervasio Vallejo | Gervasio Vallejo |
 Bertha MossPatricia | Patricia |
 Nelly LáinezAntonia | Antonia |
 Teresita PaganoAurora | Aurora |
 Pedro PompilloDon Bernardo | Don Bernardo |
 Ramón J. Garayinspector Saporiti | inspector Saporiti |
 Vicente RubinoValentín | Valentín |
 Teresa Blascoalumna del colegio | alumna del colegio |
 Egle MartinNélida | Nélida |
 Roberto BordoniNot listed | Not listed |
| AArsenio PerdigueroNot listed | Not listed |