Following the death of his father, a suburbanite runs away from home and winds up on Chicago's South Side. After being mugged, the boy befriends a young hustler and, after stealing a gangster's car, the two embark on an adventure down south in search of the hustler's estranged father.

Danny O'Brien is back in action fighting the notorious Simon Moon, also known as The Terror. Three years earlier O'Brien had single-handedly captured The Terror and was called Hero by the people of L.A. Now Simon has escaped and has started killing women again, and O'Brien is the only man who can stop him.