I'm going to guess it's about a city of people who are kicked out of society for some reason. Possibly because they look odd, or some sort of disease, power, or gene that makes them look different from other people, because of that odd patch on the skin around the guys face.
@Hoku_1
I do know a bit about your story already, but judging by the cover, i would guess that one of the characters is a boxer maybe?