Eons ago, six ancient Celtic gods turned on the seventh who promised to destroy humanity. To keep her imprisoned, they passed their powers down through their descendants who could be called on if, when, the time to rise up came. In the dark times of the late 13th century, that time came.

William de Brus, illegitimate son of King Alexander III, is sent to investigate a nobleman thought to have mysterious powers and designs on Alexander's kingdom. When he discovers the tales are true, and, that he is part of some larger idea plan, William also finds an enticing young woman who seems to be at the center of it all.

Brienne of Yester knows who her true father is and so do the villagers around her. She knows she is different in other ways and when her powers soar and she can create and control fire, Brienne learns the truth of her father's nature. And his plan to release their ancestor, the goddess of fire and chaos. The only one who makes her feel safe, the only man she dares trust, may be her soulmate or her destruction.

When passions flare and powers rise, can they trust each other enough to give all of humanity a chance to survive or will the goddess escape to destroy everything in the world?