Helen Ross, a twenty-nine-year-old biologist, is sent to a sleepy Rocky Mountain ranching town to defend a pack of wolves from those who want to destroy them. For in Hope, Montana, a century ago, the wolf was slaughtered to extinction and though now protected by law as an endangered species, the old hatred runs deep. Alone in this hostile place, bruised by a broken love affair, Helen struggles for self-esteem and survival, embarking on a dangerous alliance with the son of her most ferocious opponent, the brutal and charismatic Buck Calder.