Adelaide is a 40-year-old literature teacher married with children. One day, she learns about the murder of a wealthy and arrogant co-worker of hers, strangled in her own home. Adelaide meets Gaetano, the charming inspector dealing with the case and decides to help him in the investigation, much to her husband's chagrin.

Eugenio Finardi recounts his life (and more) moving from one song to another proposed in a more intimate way and with new arrangements. With his always very charming voice that has led him to explore Rock, Blues, Fado and pop Finardi arrives with “Suono” to song theater telling and telling himself.