“Concussion” actress Gugu Mbatha-Raw has joined Jessica Chastain in the EuropaCorp thriller “Miss Sloane,” sources confirm to Variety.

Alison Pill and Michael Stuhlbarg are also on board with John Madden directing. FilmNation is partnering with EuropaCorp on the film, with both producing.

First-time screenwriter Jonathan Perera wrote the film, which centers on a lobbyist’s efforts to push through tighter federal laws regulating guns. In the wake of the mass shootings across the country, the issue of gun violence is at the forefront of the national debate.

Mbatha-Raw will play a gun-control lobbyist.

Ben Browning will produce for FilmNation and Patrick Chu will be the executive producer. EuropaCorp will fully finance the film and handle distribution.

Mbatha-Raw next stars opposite Matthew McConaughey in “Free State of Jones,” the Civil War drama written and directed by Gary Ross that STX is releasing May 13, and she will follow that up with Disney’s live-action “Beauty and the Beast,” which bows on Mar. 17, 2017.

She is repped by CAA, Authentic Talent and Literary and the U.K.’s Curtis Brown Group. The news was first reported by the Hollywood Reporter.