In her search for the truth, seventeen-year-old Tia Thornton leaves the sophisticated world of Boston to come to the wilds of Montana. Abandoned soon after her illegitimate birth by her mother, sixteen-year-old Jessy Thornton, Tia finds more than she bargained for in search of her father.

While staying with her grandmother at the Thornton ranch, she comes across a drawing of a young Indian couple drawn many years ago. To her horror, she finds herself staring into the smiling face of a man who has haunted her dreams for as long as she can remember. The young girl standing by his side is Tia's double.