A box full of newspaper clippings, photographs, and tiny bones found under a dying woman’s bed leads to the discovery of the existence of an unusual group of children. Kept apart, these children grew up believing their fathers were the wealthy mortal men who had wed their pregnant mothers. One of these children was named Crystal; she was raised by a scientist who was obsessed with the secret of winged flight. Her mother died during one of his tests, and Crystal was sent to a foster home.
As an adult, she's searching for her father, while strange furies rise within her that become harder to control. Can she find her mortal stepfather? Will he have the answers? Can he tell her who she is, what she is, and what's wrong with her? Will she find the others like her before it's too late?