Shortly after midnight on June 12, 1963, an assassin's bullet ended the life of civil rights activist Medgar Evers, the first field secretary for the National Association for the Advancement of Colored People (NAACP) in the state of Mississippi. His killer was white supremacist Byron De La Beckwith, who was released after two trials in 1963 ended in hung juries. Nearly thirty-one years would pass before justice would make its peace with Medgar Evers. After he is assigned to reopen the case, Assistant District Attorney Bobby DeLaughter enlists the aid of investigators Charlie Crisco and Benny Bennett in uncovering evidence once thought impossible to reclaim. Throughout a journey filled with self-doubt and public criticism, he pursues not only justice for Medgar and Myrlie, his victimized widow, but also proof that Mississippi can change for the better as well.