Earp & Doc Holliday form a posse to hunt Ike Clanton and his gang
James Garner, Jason Robards, Robert Ryan, Albert Salmi
Marshal Wyatt Earp kills a couple of men of the Clanton gang in a fight. In revenge, Clanton's thugs kill the Marshal's brother. Thus, Wyatt starts to chase the killers together with his friend Doc Holliday.