Anjo Mau portrays the ambitious and disguised Nice (Gloria Pires), whose obscure side is only known by the viewer. The adopted daughter of Augusto (Cláudio Corrêa e Castro) and Alzira (Regina Dourado), she seeks social ascension at any cost. The mother, a bitter woman, is the only one able to perceive the perversity of the daughter, keeping always attentive to her steps.