Diegong Bayong

When his daughter is murdered, William Duncan takes the law into his own hands, setting out on a quest for retribution. After killing the street thug responsible for her death, he finds himself in the middle of a war with the thug's brother, father, and their gang, who are equally hell-bent on getting even. What ensues is a tense back-and-forth game of vengeance. By the end, William comes to find that the quest for revenge never has a winner.

After his police officer brother is killed by a drug dealer who flees to the protection of his cartel-connected uncle in Mexico, an American man with a diverse law enforcement/military background goes south of the border to get revenge

When her husband goes missing during their Caribbean vacation, a woman sets off on her own to take down the men she thinks are responsible.

After his son is wrongly accused of kidnapping, a deacon who has just lost his wife takes matters into his own hands and fights a crooked police gang to clear him.

Nick and Ruben are hoodwinked into a "shootfighter" (no-holds-barred, to the death) martial arts match by the evil Mr. Lee, who has a grudge against world shootfighter champ(and teacher of Nick and Ruben) Shingo.