It's an Alpha/Omega Thing

Even though the sun is shining bright outside your window and the children are happily playing in the streets, you can't seem to muster up the energy to put a smile on your face. Today is the day that you are going to be to grow up and leave your childhood home, only to go to the Facility, where you are going to be to find a mate to breed with. You're not happy about it because, if you don't find one within the year you stay there, you have but to mate and bond with whoever they pair you with. You have plenty of worries, but that is your biggest. Your fear causes your wings to wrap around you, an automatic response to hid you from predators though it is useless against things that only exist in your head.

You free yourself of your wings and you pick up the book on Alphas, Omegas, and Betas again, making sure that you understand everything about your own sex and the other sexes. The more you know, the easier it will be on you to get through the year.

The first sex that is talked about is the Alphas, the part of the population that runs most of the country and impregnates Omegas and Betas alike, though finding an Omega mate is much more desirable. Each Alpha, even the females, has a large cock that forms a knot at the bottom when having intercourse with an Omega that makes it much more likely that the Omega will fall pregnant. Occasionally an Alpha will go into Rut, where they fall into an more animal-like state where they are willing to mate with almost anyone, including other Alphas.

The second sex is the Omegas, the part of the population that stays at home to raise children, with some exceptions. Their job is to find an Alpha to impregnate them and support them, though some decide to mate with Betas. All Omegas have the ability to carry children whether they are female or male and go into heat three to four times a year, which is their most fertile times.

The final sex are the Betas, who are lucky enough to not have to go to the facility. They are sometimes barren, but most follow the ways of their first sex; male or female. Only the males can impregnate people and only the females can get pregnant. You can only wish that you had been born a Beta, but that hope has been dashed for you.