Bare Knuckle Brawler.

When cop Steve returns home in the midst of his brother Joey's investigation into the murder of two bare knuckle fighters, the case becomes personal when Joey is found brutally murdered. With a sense of justice and revenge Steve knows what he has to do. Enter the underground world of Bare Knuckle Brawling; run by the brutal Mereta Crime family where there is only one rule. There are no rules!