EXCLUSIVE: Dakota Fanning Gets Badass and Bloody in New Trailer and Poster for Western 'Brimstone'

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Dakota Fanning is all grown up and her new movie has the hard R rating to prove it.

Fanning stars opposite Guy Pearce in the Western thriller, Brimstone, and ET is exclusively premiering the new trailer, which previews just some of the film's "brutal bloody violence, strong sexual content including disturbing behavior, graphic nudity, and language."

We are also debuting the poster, below, with its foreboding tagline: "Retribution is coming."

Momentum Pictures

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Here is the official synopsis for Brimstone: "Wrongly accused of a crime she didn’t commit, a frontier woman-turned-fugitive (Fanning) is hunted by a vengeful preacher (Pearce) in the menacing inferno of the old American West."

Momentum Pictures

The film, from Dutch director Martin Koolhoven, co-stars not one, but two Game of Thrones stars: Kit Harington, aka Jon Snow himself, and the Red Woman Melisandre, aka Carice van Houten, who welcomed a Brimstone baby with Pearce last August: a son named Monte.

Momentum Pictures

is in select theaters and available On Demand on March 10.