After the colonel has ordered all the Indians to be shot on sight in a spirit of hate, Winona is found among the dead and taken into the home of the colonel. Years later we find her in love with the colonel's son. He humors her but expresses no deep affection for her. She grows jealous of his attention to a white girl. When the Indians attack the fort she makes the discovery of her origin, that she is the daughter of the attacking chief and that her people were killed at the command of the man who has raised her. She wishes to return, a step that would save the fort from the attack, but she is refused the opportunity. The colonel is wounded and abuses the Indian girl who still wishes to escape and save the inmates. Soon the colonel's wife is shot down and her sweetheart. She rushes to the vault, secures a keg of powder, sprinkles from the cellar to her room, throws the lighted match on the powder and dies in the terrific explosion that follows.
—Moving Picture World synopsis