Manolo is the trusted servant of a famous tenor, Riccardi, an international opera singer. Although his life is overshadowed by the fame of his master, one day his luck changes. In a short time, two unusual events occur: he falls in love and an eccentric inventor offers him the deal of a lifetime...
| Actor | Role |
|---|---|
 Manolo EscobarManolo | Manolo |
 Perla FaithRita | Rita |
 Antonio GarisaIndalecio | Indalecio |
 Narciso Ibáñez MentaRenzo Ricciardi | Renzo Ricciardi |
 Gilda HaddockAnita | Anita |
 Mary SantpereRosa | Rosa |
 Marilyn PupoJulia | Julia |
 José «Saza» SazatornilMr. Ray | Mr. Ray |
| AAlejandro UlloaSr. Perelló | Sr. Perelló |
 Rafael HernándezTaxista | Taxista |
 María VicoSra. Ray | Sra. Ray |
 Gustavo RePianista | Pianista |
 Florencio CalpeEpifanio | Epifanio |
| AAsunción VitoriaHermana de Julia | Hermana de Julia |
| RRosa FloresNot listed | Not listed |
| EEmilio PozoNot listed | Not listed |
| JJosé Antonio VilasalóNot listed | Not listed |
| JJosé María CasesNot listed | Not listed |
 Mercedes MonterreyNot listed | Not listed |
| MMiguel MuniesaNot listed | Not listed |
| MManuel BronchudVecino | Vecino |
 Luis InduniComisario | Comisario |