This riveting drama revolves around the true events of a 1975 cover-up involving a shooting by two white members of the Boston Tactical Unit. While staking out a suspected getaway car linked to an armed robbery, the officers fatally shoot a black man who enters the vehicle. They justify their actions by claiming self-defense, alleging the man was armed. Despite a police investigation ruling it as a justifiable shooting, the man's widow is determined to uncover the truth.