Walker valiantly tries to save a baby trapped in a car dangling from a bridge railing, but when the railing gives way, both the car and Walker plummet into the river below.
After learning that one of his parents' killers was never brought to justice, Walker finds a witness and goes undercover to locate the culprit.
When two cattle ranchers plot to kill a herd of federally protected wild Mustangs that are grazing on their property, Walker goes to arrest them but is left for dead after losing a confrontation with the men.
Chief Six Feathers' funeral turns out to be more than just a reunion for Walker and a childhood friend, when the chief's son confides that his father's death was not an accident.