In a desperate attempt to reach a doctor to minister to his dying child, Jim, exhausted by a nine-mile run and with still twenty-one miles to cover, appropriates by force the horse of the mail carrier. The sheriff organizes a posse of cowboys who pursue Jim, thinking him a common horse thief. The doctor ministers to the injured girl and Jim is apprehended, but is released by the sheriff, who learns the true state of facts by listening to the evening prayer of Jim's little boy, who had been the innocent cause of his sister's injuries by chasing her, in play, near the mouth of the mineshaft in which she fell.
—Moving Picture World synopsis