An underaged heiress is sent to a reformatory by her unscrupulous guardians to prevent her from fulfilling the conditions of her father's will. Meanwhile, a street-vendor gets mistaken for an eminent psychologist and is hired to teach at that reformatory.
| Actor | Role |
|---|---|
 Germán ValdésNot listed | Not listed |
 Meche BarbaNot listed | Not listed |
 Marcelo ChávezNot listed | Not listed |
 Conchita Gentil ArcosNot listed | Not listed |
 Maruja GrifellNot listed | Not listed |
 Beatriz RamosNot listed | Not listed |
| NNatalia G. ArcosNot listed | Not listed |
 Ernesto FinanceNot listed | Not listed |
 Rafael IcardoNot listed | Not listed |
| CChucho GrañaNot listed | Not listed |
 Humberto RodríguezNot listed | Not listed |
 Hernán VeraNot listed | Not listed |
| NNatalia Gentil ArcosSeñorita secretaria | Señorita secretaria |
| JJesús GrañaDr. Artemio Mata Lozano | Dr. Artemio Mata Lozano |
| SStephen BerneEspectador baile | Espectador baile |
| MMaria Luisa CortésEspectadora baile | Espectadora baile |
 Gloria LozanoChica baila con Tin Tan | Chica baila con Tin Tan |
| FFélix MedelCliente Tin Tan | Cliente Tin Tan |
| EElvia PedrozaColegiala | Colegiala |
| ÁÁngela RodríguezColegiala | Colegiala |
| MMaría Luisa SmithEspectadora de vendedores | Espectadora de vendedores |
 Manuel ValdésTranseunte | Transeunte |
| IIldefonso VegaEspectador baile | Espectador baile |