Two years after the events of Unbroken, Will Thurston is no closer to reclaiming his kingdom. With his back against the wall, Will chooses to travel North to visit his aunt to broker a deal. But he has no idea what awaits him, and the decisions made by others seem to separate Will and Tamzin forever, as Will sacrifices himself to save Tamzin and their son.
Left alone with their son, Liam, Tamzin takes refuge with those who dwell in the Mountains. Sworn to avenge her husband and her son's lost crown, Tamzin agrees to join the rebellion, at the cost of selling herself to the greatest fighter in the Mountains. Mourning her husband, she discovers that her presumed future husband has her son's eyes and her husband's skill. Tamzin is about to discover that Will Thurston, always and unconditionally, lives up to his legend.