In 19th-century Texas, a teenage girl sets out to seek revenge for the murder of her father. With the help of a tough US Marshal, they embark on a dangerous journey filled with manhunts, shootouts, and showdowns.

Rooster Cogburn, a one-eyed US Marshal with a reputation for being tough and fearless, embarks on a dangerous mission to seek revenge on an outlaw gang. He recruits a spinster named Eula to help him navigate the treacherous river rapids and engage in a shootout with the villains. Along the way, they face battles of the sexes, encounter a Gatling gun, and deal with personal demons.

The further adventures of True Grit's Rooster Cogburn has him battling injustice in his own unorthodox way while contending with a teenage girl bent on reforming him.