The colony of Survin has been hidden for centuries, protecting an ancient religious artifact called the Healing Crystal from men who would steal or destroy it. Kairma, heir to the Crystal, is destined to mate with the handsome Naturi and become the leader of the reclusive colony, but she is too young to realize the peril soon to arrive. At sixteen, Kairma is too young to realize many things .... Kairma would rather go spelunking with her brother and his best friend than study ancient medicine and religious laws, but the discovery of a tomb containing ancient artifacts leads Kairma to question her religion and the true nature of the Crystal. To further complicate Kairma's ascent, a childhood illness has left her resembling a nearby race of men both hated and feared by the people of Survin. Because of this, Kairma's younger sister Kinter, who is in love with Naturi, believes she is the rightful heir. Disease and infertility have decimated Survin, but bigotry and religious laws forbid the introduction of new members so things heat up when a traveling archeologist stumbles upon the reclusive colony and introduces a powerful new weapon. Forced into a larger world, the Survinees discover they hold an object of unimaginable power, a power other men covet, a power that might save or forever damn the human race.