The story of two marginalized beings, an old alcoholic and a mute boy, who meet stealing on the streets of San Francisco. The friendship that arises between the two will make the man stop drinking and go back to practicing the forgotten martial arts. Frank, the mute boy, will become his student and executing arm to help him avenge the murderer of his entire family at the hands of the mafia.

Former stripper turned aspiring country singer Bette Barnette gets a gig performing at a seedy tavern run by the no-nonsense Georgia. However, poor Bette can't get the rowdy male patrons to take her seriously as a singer. Meanwhile, evil local businessman Sam Diamond plots to get his greedy hands on Georgia's place, feisty and ambitious younger singer Dolly Pop doesn't take it lightly that Bette has taken her job, and Bette's sister Doris Ann has problems of her own with her wannabe daredevil boyfriend Danny.

Madame Lu has created three "Death Machines," a trio of martial arts experts who have been injected with a special serum, turning them into mindless zombies, capable only of murder, at Lu's command. Tasked with eliminating her enemies, the Death Machines go on a blood-soaked rampage, killing anyone in their path. After they massacre an entire dojo, leaving only one survivor, the Death Machines and Madame Lu herself become the targets of his vengeance...