Mos Def and Sophie Okonedo are in final negotiations to co-star in the indie period drama Stringbean and Marcus, which was written and will be directed by first-time feature helmer Tanya Hamilton.

The Hollywood Reporter reports that the film takes place in 1978 and focuses on the broken love affair between two former Black Panther members (Mos Def and Okonedo) and is told through the eyes of an adolescent girl.

Sean Costello, Jen Roskind and Samara Koffler will produce for RedBone Films. Shooting is scheduled to begin in July in Philadelphia.