A hitchhiker named Martel Gordone gets in a fight with two bikers over a prostitute, and one of the bikers is killed. Gordone is arrested and sent to prison, where he joins the prison's boxing team in an effort to secure an early parole and to establish his dominance over the prison's toughest gang.
Macbeth, the Thane of Glamis, receives a prophecy from a trio of witches that one day he will become King of Scotland. Consumed by ambition and spurred to action by his wife, Macbeth murders his king and takes the throne for himself.
