What would you do if you had to leave everything you knew behind? If what made you perfect also made you an outcast? If your twin, once your only friend, was now your worst enemy? Cass is born a few minutes after her brother, Zach. Both infants are perfect, but only one is a blessing; only one is an Alpha. The other child must be cast out. But with no discernible difference, other than their genders, their parents cannot tell which baby is tainted. Perfect twins. So rare, they are almost a myth. But sooner or later the Omega will slip up. It will eventually show its true self. The polluted cannot help themselves. Then its face can be branded. Then it can be sent away.