Carlo is a doctor that has recently lost his wife. Affected by the loss, he is supported by his family and friends, and, above all, for the love he feels towards his little daughter. And then, one day, he meets Camille.
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.
The vicissitudes of Walter – a dissatisfied and disenchanted 20-year-old on-and-off philosophy student without a job, a girlfriend or any real beliefs – who reluctantly returns to his native Turin to live with his irascible blue-collar father and his mother, almost mute due to a severe nervous breakdown.
Karminio tells about the time when chameleons, because of their bright red color, were easily spotted and eaten by predators, especially dinosaurs and black birds. To avoid extinction, one of them proposed to change their color by painting themselves green, so as to camouflage themselves.