For five centuries, a witch's curse has bound the trolls to their city beneath the ruins of Forsaken Mountain. Time enough for their dark and nefarious magic to fade from human memory and into myth. But a prophesy has been spoken of a union with the power to set the trolls free, and when Ccile de Troyes is kidnapped and taken beneath the mountain, she learns there is far more to the myth of the trolls than she could have imagined.

Ccile has only one thing on her mind after she is brought to Trollus: escape. Only the trolls are clever, fast, and inhumanly strong. She will have to bide her time, wait for the perfect opportunity. But something unexpected happens while she's waiting - she begins to fall for the enigmatic troll prince to whom she has been bonded and married. She begins to make friends. And she begins to see that she may be the only hope for the half-bloods - part troll, part human creatures who are slaves to the full-blooded trolls. There is a rebellion brewing. And her prince, Tristan, the future king, is its secret leader.

As Ccile becomes involved in the intricate political games of Trollus, she becomes more than a farmer's daughter. She becomes a princess, the hope of a people, and a witch with magic powerful enough to change Trollus forever.