The mental illness that struck young Dario, one of the two children of the Dominici family who lives in a magnificent Roman palace, disrupts the life of all its members.
Tano is an attractive sales representative who falls in love with Marianne, young daughter of the lawyer Pantaleo Fortis. The different social backgrounds of the two families, however, will put their love to the test.
An office employee, pretending to be weak and crippled, reveals himself as a ruthless criminal.