Industrialist's son returns from the USA, where he'd been supposedly studying Nuclear Physics, when in fact he'd devoted himself to pop music, without his father's knowledge.
| Actor | Role |
|---|---|
 OscaritoChico | Chico |
 Cyll FarneySérgio | Sérgio |
 Zezé MacedoFru-Fru | Fru-Fru |
| SSonia MamedeMara | Mara |
| MMargot LouroLuíza | Luíza |
 Carlos ImperialNot listed | Not listed |
 Doris MonteiroLucy | Lucy |
| GGrijó SobrinhoNot listed | Not listed |
 Abel PêraNot listed | Not listed |
 Luiz Carlos BragaNot listed | Not listed |