The murder of her father sends a teenage tomboy on a mission of 'justice', which involves avenging her father's death. She recruits a tough old marshal, 'Rooster' Cogburn because he has 'true grit', and a reputation of getting the job done.
Lawman Wyatt Earp and outlaw Doc Holliday form an unlikely alliance which culminates in their participation in the legendary Gunfight at the O.K. Corral.
