In Spain of 1972 a student couple decides to test the marriage before marrying in reality in order to prevent a irremediable failure. But this was like a revolution for the catholic society of this time.
| Actor | Role |
|---|---|
 Ornella MutiSandra | Sandra |
 Alessio OranoNot listed | Not listed |
 Alberto ClosasNot listed | Not listed |
 Julia Gutiérrez CabaNot listed | Not listed |
 Ismael MerloNot listed | Not listed |
 Mabel KarrNot listed | Not listed |
 Carlos LemosNot listed | Not listed |
 Cristina SurianiNot listed | Not listed |
 Marta BaizánNot listed | Not listed |
 Inma de SantisNot listed | Not listed |
| FFernanda HurtadoNot listed | Not listed |
 Helga LinéNot listed | Not listed |
 Adriano DomínguezPepito | Pepito |