Amber Heard has joined the cast of the indie drama 'Gully'.

Amber Heard

Amber Heard

The 31-year-old actress will be starring alongside 'All the Money in the World' actor Charlie Plummer in the new movie which marks the directorial debut of music video director Nabil Elderkin, Variety report.

Kelvin Harrison Jr., Jacob Latimore, Alice Eve and Jonathan Majors are also on board the movie which has been penned by Marcus Guillory.

The film is set in a dystopian version of Los Angeles and follows three disaffected teenagers - who are all victims of childhood trauma - who are running a hedonistic riot.

Heard has reportedly signed on to play Plummer's mother.

The movie is being produced by Brad Feinstein along with Tom Butterfield, Ben Pugh, Corey Smyth and Alex Georgiou.

Heard will next be seen starring in the DC Extended Universe movie 'Aquaman' alongside Jason Momoa as the titular character.

The film follows Arthur Curry/Aquaman - played by the 'Game of Thrones' star - who finds himself caught between a surface world that ravages the sea and the underwater Atlanteans who are ready to revolt.

Momoa stars alongside Heard, Nicole Kidman, Temuere Morrison, Patrick Wilson, Abdul-Mateen and Dolph Lundgren.

The film has been helmed b filmmaker James Wan who recently said 'Aquaman' does not have "three villains" because that would be evil overkill.

Wan said: "This is what I'll say: I don't have three villains. I think that's ridiculous! I would never go into an origin movie with three villains. We don't even know the main character let alone the world and its antagonist. I believe in taking baby steps."

Aquaman was briefly seen in a cameo in 'Batman v Superman: Dawn of Justice' and made his full big screen debut in 'Justice League' last year.