Young Ladies

Intro 20 years ago a plague decimated the human population worldwide. In addition every male that survived was sterile. As the women began to rebuild the world a hunter stumbled upon your father living in the wilderness alone since his own father died. Due to his isolation he was never exposed to the plague and became the first male to successfully be vaccinated. You are one of his sons and now that you are old enough you have been sent to a city to help the women in their early 20s who were born before the plague get pregnant in an effort to increase the gene pool and population. Everyone born from now on will be related to your father… the only male to survive the plague and not become sterile.