Grandma Snap Turtle tells Little Beaver to take his troublesome pet crow into the forest and leave him. While in the forest, Little Beaver is captured by Paiute raiders when he saves a Pauite woman from an attack by a mountain lion.; Little Beaver and Po-Ko get caught in the middle of a mail robbery at a Pony Express station.; Little Beaver and Po-Ko are captured by two men who had robbed the Wells Fargo stage. Little Beaver sabotages the robbers' water supply by putting soap in their canteens.; When robbers hold up in a well-stocked cave, Flying Eagle tricks them into coming out into an ambush by a posse.; Little Beaver mistakes the smoke from a railroad engine for smoke signals.