Josh Hartnett and Naomie Harris have signed on to the indie drama, August; Hartnett is also producing.

Austin Chick co-wrote the screenplay with Howard Rodman, and is directing the film revolving around two brothers who try to keep their startup financial company afloat on Wall Street a month before the Sept. 11 attacks. According to The Hollywood Reporter, Hartnett will play one of the brothers; Harris will be the female lead.

Production on August is scheduled to begin in April in New York.