Dodo has fallen in with Kate and Doc, who both plan to leave town and take her with them. When Seth Harper stumbles across their escape plans, Holliday kills him, and the trio depart. Harper's role as aide to the Clantons is soon replaced by a new arrival, Johnny Ringo, who shoots local barman Charlie by way of an introduction to the town of Tombstone. The Doctor and Steven return to the Last Chance Saloon in search of Dodo and encounter the dangerous Ringo.