Fred 'The Hammer' Williamson stars in this Eighties black action film. Jack Sebastian Turner (Williamson) returns to his woman Sabrina after five years in prison in Italy. Sabrina is now a drug pusher and addict, and when she dies Jack vows to avenge her death by waging a war on the drug barons. He is aided by wealthy Paul Gieldgud, who supplies him with a hit list of bosses in the US. Soon the super cool, super hard 'Messenger' is cleaning up, but he also has the FBI on his tail and his friend Gieldgud is hiding something.