Harper is brought to Louisiana to investigate an attempted blackmail scheme. He soon finds out that it involves an old flame of his and her daughter. He eventually finds himself caught in a power struggle between the matriarch of the family and a greedy oil baron, who wants their property. Poor Harper! Things are not as straight-forward as they initially appeared.

The new warden of a small prison farm in Arkansas tries to clean it up of corruption after initially posing as an inmate.

A Vietnam veteran, Charles Rane, returns home after years in a POW camp and is treated as a hero. When thugs invade his home to steal the silver coins he received for his service, they mangle his hand and leave him and his family for dead. Rane survives and becomes obsessed with getting revenge. Aided by his loyal friend Johnny Vohden, Rane, now wielding a hook for a hand, sets out on his mission of vengeance.

Coffy is a nurse whose younger sister gets involved in drugs and is severely injured by contaminated heroin. Coffy sets out on a mission of vengeance and vigilante justice, killing drug dealers, pimps, and mobsters who cross her path.