After robbery in town, citizen picks up shotgun off street dropped by 'shotgun' miller after robbery. 'Papa' rides into town holding shotgun and is mistaken for the bandit. He escapes on his horse only to fall off and have to be rescued by Cisco and Pancho from a treacherous rock cliff. The sheriff and posses show up and throw all in jail. After members of Shotgun Miller's gang hear about this, they decide to break papa out of jail since he must know where the real papa is... Cisco and Pancho must then break out and rescue papa to clear their name.