Everything in Cassia's world has been chosen. What she can read, what to believe, and who she'll love. A seeming glitch in the choice of her perfect match has Cassia unsure if her mate to be is Xander, a lifelong friend, or Ky, a boy who's been forbidden from the matching system. As Cassia leans toward the more impossible of the two choices, she doubts the society's purported perfection, and wonders if there's a world out there where she can finally choose for herself.