The Valeros Highlands. A region where only two things are guaranteed: cold and war. Eira and Astrid, two twin sisters born to the leader of the smallest, nomadic clan in all of Valeros. For seventeen years, their clan's existence has gone unnoticed by the much larger, power-thirsty clans of the hostile region. A cruel twist of fate throws the sisters' lives into the hands of the Mountain, the notoriously bloodthirsty man who put their father's head on a stake. Eira and Astrid must learn to play the game of survival, each in her own way, in a new clan of kill or be killed.