Etan Cohen will direct Get Hard.

The Tropic Thunder writer has signed on for the Will Ferrell and Kevin Hart-starring Warner Bros comedy, Digital Spy reports citing Variety.

The story centers on an affluent investment banker (Will Ferrell) who is sent to prison for a crime he didn't commit. Before he is locked up, he "trains" for prison life with the man who washes his car (Kevin Hart).

Ian Roberts and Jay Martel (The Goods: Live Hard, Sell Hard) wrote the screenplay, with Will Ferrell attached to produce through his Gary Sanchez Productions company. Production will likely come together very quickly, since Warner Bros. wants to lock down the project before the actors commit to any other movies.

Etan Cohen is best known for his work as a screenwriter, penning the scripts for Idiocracy, Tropic Thunder and Men in Black 3. He is also attached to direct Daddy's Home for Will Ferrell and Paramount, MovieWeb said.