In a crime-ridden and decaying urban neighborhood, a pregnant woman living in a tenement building becomes the target of a sadistic gang. After her husband is killed by the gang, she takes up arms and fights back against the ruthless criminals. With the help of some sympathetic neighbors, she engages in a brutal battle for survival and revenge.

Fred, the nephew of a senator,has murdered a Black man on a train. The two only witnesses are Lizzie McKay, a prostitute from New York, and Sidney, a colored man. Fred decides to seduce Lizzie in order to make her give false evidence according to which Sidney has attempted to rape her. The uncle also puts pressure on the young woman. After much hesitation, Lizzie finally accepts but Sidney, who has nearly got lynched, takes refuge at her home...