Grazia de Plessans abandons her studies in a convent following a mystical crisis. In her paternal house, she studies music together with maestro Claudio Morillot with whom she ends up falling in love.
| Actor | Role |
|---|---|
 Lyda BorelliGrazia di Plessans | Grazia di Plessans |
| FFrancesco CacaceRuggero Lechatelier | Ruggero Lechatelier |
 Wanda CapodaglioNot listed | Not listed |
| AAngelo GallinaNot listed | Not listed |
 Leda GysSusanna Lechatelier | Susanna Lechatelier |
 Amleto NovelliClaudio Morillot | Claudio Morillot |