Half Castian and half Tonan, Doss is considered nothing more than a Tonian hybrid. A being to be feared, with the power to kill by penetrating what is supposed to be impenetrable.

Loathed by many, feared by more, Doss has spent the last 700 years alone, shunned by the Tonans on his planet. He prefers it that way until a nude female rider on a huge, black stallion, fleeing for her life, catches his eye. If left alone, both beast and human would be killed by their pursuant, an enraged Tonan warrior. When the scent of the female invades his nostrils, Doss is captivated. He must have the female human and will go to great lengths to secure her safety.

Zoe hates both Castians and Tonans. The promise of salvation from dying Earth, on planet Ulsy, had been nothing more than a lie. Human males were slaughtered, and human women were captured to lure secrets of the Castian planets, Bagron and co-planet Dargon, from enslaved warriors with the promise of sex. When met with the six-foot-six hybrid warrior who moved like an apparition in battle to save her and her beloved stallion Caveat, Zoe is unsure what to do. She has no idea of his intentions, but from the shiver that runs down her spine she is certain she's about to find out.