Hitchhiking to "anywhere but here" puts Callie on a path to encounter the last of the Primals, an ancient race of shape-shifters hidden from humanity and on the brink of extinction.
First their captive, chosen to breed with all of them and help create a new generation, she is afraid and excited by the idea of sex with so many sexy men with beasts inside them. As she concedes to their insatiable desires Callie discovers the depraved depth of her own sexuality of herself and realizes the new life she wanted so desperately is going to be stranger and better than she ever dreamed.