Young Franco is imprisoned for murder and rises to become the feared and powerful 'Professor', taking control of Naples' underworld from behind bars.

Rosa (Marina Suma) is a low-level worker who decides to quit a nowhere job and turn to prostitution instead, all the while living with a boyfriend who is dealing drugs for his financial support. Entering into the picture is a homosexual friend who wants a child of his own and is willing to donate a good apartment to the couple if Rosa will marry her boyfriend and bear a child. She does get pregnant, but by that time has had it with the constant presence of the homosexual, and is having second thoughts about her pregnancy.

Tony is a young Neapolitan musician. He has a lot of problems and a past with drugs, but also with women. He is engaged to Susy, but he betrays her with a university professor, who has an invalid husband, but also with other young aspiring singers, who try in every way to break into the world of music. Among these there is Elena, engaged in various difficulties to organize a concert with the best names of Neapolitan music.

Isotta, a poor and overweight girl, works as a seamstress in a popular district of Naples. She spends her time dreaming to escape from the harsh reality.

A family of Polish immigrants tries to build a new life in Rome.