When 18-year-old Lady Catriona Mackintosh discovers a wounded man in the forest near her Highland home, little does she know that he has sworn a sacred oath to kill her father and other members of the powerful Highland confederation known as Clan Chattan. Nor does she realise that she has met her soul mate. Catriona is the daughter of a Highland chieftain and granddaughter of the even more powerful Chief (or Captain) of Clan Chattan. But her life changes forever when she persuades Sir Finlagh Cameron to return with her to her home to recover from his wounds.
Sir Finlagh 'Fin' Cameron is on a mission for the heir to Scotland's throne, who has sent him to the Highlands to persuade the Chief of Clan Chattan to arrange a secret meeting for him with two other great lords. Until Fin meets Catriona, however, he has no idea that her father was the Clan Chattan war leader who led them in the battle that wiped out many of Clan Cameron's best warriors, including Fin's own father. The sole survivor of that battle, Fin accepted a bequest of vengeance from his dying father, providing him with a dilemma to face as he begins to fall in love with Catriona...