When, in a very strict Catholic school, a teacher enters a bathroom and surprises two students engaged in forbidden sexual practices, some of their classmates do not know whether to remain silent or rat out their own friends when questioned by school authorities.
| Actor | Role |
|---|---|
| JJosé Luis RomeroNot listed | Not listed |
| JJosé Antonio BlascoNot listed | Not listed |
| AAntonio PuenteNot listed | Not listed |
 Miguel PicazoNot listed | Not listed |
| JJosé Antonio VivancoNot listed | Not listed |
 Concha Gómez CondeNot listed | Not listed |
| JJuan Carlos San MartínNot listed | Not listed |
| EEsteban CañasNot listed | Not listed |
| JJosé María LlorenteNot listed | Not listed |
| RRafael BorquéNot listed | Not listed |
| CCarmen QuesadaNot listed | Not listed |
| LLuis SantamaríaNot listed | Not listed |
| AArmando P. BeneitoNot listed | Not listed |
| FFernando VivancoNot listed | Not listed |
| RRamón G. RedondoNot listed | Not listed |
| MMiguel RubioNot listed | Not listed |
 José María PradaFather Prefect (voice) | Father Prefect (voice) |
| IIgnacio Varela(voice) | (voice) |
| JJoaquín Aparici(voice) | (voice) |
| JJulio Ortega Raposo(voice) | (voice) |
| MMiguel Rude(voice) | (voice) |
| PPierre Llense-Tilly(voice) | (voice) |
| MMaría José Pincel(voice) | (voice) |
| JJuan Tébar(voice) | (voice) |
| JJosé María Carreño(voice) | (voice) |
| BBernardo Fernández(voice) | (voice) |
| JJosé Antonio Marqués(voice) (uncredited) | (voice) (uncredited) |