Five years ago, Rowan underwent genetic modification and joined the Berserkers, a vicious new race threatening humankind. She left behind a devastated family in the peaceful Anai Valley of Antarctica and thought she would never see home again. But things are changing. Bran, the charismatic and ruthless leader of the Berserkers, has his sights set on the Anai Valley as he races toward more ambitious goals than anyone could imagine. Will Rowan stay true to Bran, her commander and lover? Or will she remember old loyalties and turn her destiny around? As the epic Frozen World saga races toward an enthralling finish and the greatest mystery of the Anai people finally comes to light, Rowan must make her choice.