Nora Telese is a psychiatrist who recently moved to San Benedetto del Tronto with her teenage daughter Camilla.  Their life seems to flow serenely and Camilla meets Sonia, whith whom a unique and special friendship developes. One Saturday evening in May, the two girls go to a party and don’t return home.  Their phones are unreachable and both girls seem to have disappeared into thin air. The prosecutor opens a file; Vice Quaestor Giovanni Nemi is in charge of the investigation; the case becomes increasingly complicated.