It's a case of comic mistaken identity when Hoss - on a delivery run for the Ponderosa - is mistaken as a member of the bumbling Younger Brothers gang. Ben and Joe are eventually able to convince the authorities to let Hoss go, but not after a series of misunderstandings wherein they too are involved with the Youngers' gang.
Did You Know?
About ten years later at least part of the story was reused for "Little House on the prairie". In the scene where the Younger brothers get out Isaiah from jail, the wording is nearly identical to the scene where the brothers get out Hoss. See more