Holly, Cassie, and Stacy are slim, pretty women with big breasts and flat butts. They believe their big "mommy milkers" make them superior to "inferior" flat chested women. They love to tease, bully, and steal boyfriends from "subhuman" flat-chested women. Eventually, they start a utopia where one must be busty with mostly busty female relatives in order to immigrate, and anyone who remains flat-chested by adulthood is forcibly sterilized.