Lukas's life is changed when he witnesses the murder of a local in his Prussian village.
After his father's arrest, Lukas is cared for by the Baron's family while waiting to hear from his grandfather in Canada.
Lukas and the Baroness fight smallpox on the voyage to America, while Karl experiences racism in the American South.
Running from Otto, Lukas and Ursula are rescued by some natives who help the children reach Niagara Falls.
After surviving a Sioux attack, Lukas and Ursula arrive at a western settlement with the wagon train. Both Karl and the Baron keep looking for their children.
After returning White Feather to the Sioux, Lukas finds that the Sioux remember his presence at the battle and debate his fate. Karl continues westward looking for Lukas.