Alexandra has been playing tennis for as long as she can remember. After years of training under the instructions of her father, Julio (a retired tennis player who intends to relive his victories through his daughter), she has become one of the most promising junior tennis players in the Spanish circuit. During one of the most important tournaments of the 1978 season, the increasing pressure from her father will exert on and off the court will begin to affect her mental health. With the arrival of adolescence and the questions it brings, Alex will realize that, perhaps, this is not her destiny.
| Actor | Role |
|---|---|
| IInés CocaAlex | Alex |
 Victor SoléJulio | Julio |
| TThéo BoresDani | Dani |
| MMarina SalaetAna | Ana |
| ÓÓscar GiménezVicen | Vicen |
| AAlèxia PonceAlma | Alma |
| MMax SelvaJavi | Javi |
| NNúria OliuDora | Dora |
| CCenan LucaQuique | Quique |
 Mariona PagèsArancha - Rival | Arancha - Rival |
| AAlbert SuchCamarero | Camarero |
| MMontserrat VilarNot listed | Not listed |
| ÈÈrica FernándezNot listed | Not listed |
| LLimay AguilarNot listed | Not listed |
| CClaudia JaraNot listed | Not listed |
| FFranciane FrançaNot listed | Not listed |
| JJúlia RodríguezNot listed | Not listed |
| MMontserrat BotetNot listed | Not listed |
| MMartí CastilloNot listed | Not listed |
| RRafael MiuccioNot listed | Not listed |
| PPablo San MartínNot listed | Not listed |
| RRosalio Araceli ArequipeñoNot listed | Not listed |
| JJosé SerraNot listed | Not listed |
| AAlex GelabertNot listed | Not listed |
| GGisela SilvaNot listed | Not listed |
| RRaül BaellNot listed | Not listed |
| AAnna Maria del CorralNot listed | Not listed |
| LLluís EspaulellaNot listed | Not listed |
| JJoan GelabertNot listed | Not listed |
| JJavier BustosNot listed | Not listed |