Arianna recently married a businessman Aurelio and she brings her children, Carlotta and Gustavo to the new family. But Carlotta is attracted by the new stepfather and seduces him. Gustavo, however, prefer a gay relationship with Mario.
A burned-out New York police detective teams up with a college psychoanalyst to track down a vicious serial killer randomly stalking and killing various young women around the city.
Pollution caused by an incinerator drives people mad and turns them into maniac killers. But, instead of the victims' bodies, the three wise monkeys are found (one cannot hear, one cannot see, one cannot speak).