Iola, the little Indian girl, is held captive by a gang of cutthroats, from whose clutches and abuse she is rescued by Jack Harper, a prospector. She is truly grateful to Jack, for she regards him as something different from the white people she has seen. Jack's sweetheart and her father are parties of a wagon-train headed for this place, and as luck has been against him, he is somewhat gloomy. Iola learns the reason, and promises to help him find gold. He is amused at this and says "Will you?" "Yes." "Cross your heart?" This cross-your-heart action mystifies the little Indian. She thinks it is a sort of tribe insignia and tells her people that "Crossheart" people are all right. Iola surely pays her debt of gratitude, not only in finding gold, but in giving her life to protect Jack's sweetheart from her own people, who are embittered against all whites.
Moving Picture World synopsis