Franky Four-Fingers, a diamond thief, successfully steals an 86-carat diamond in Antwerp and heads to London to deliver it to his boss, Avi. Along the way, he makes a stop in a small-time boxing match to place a bet. Unbeknownst to Franky, the match is rigged by two small-time promoters, Turkish and his partner Tommy, who are in deep waters themselves, trying to navigate the world of match-fixing in unlicensed boxing. Turkish's plans go awry when the fighter they had arranged to take a dive gets knocked out by Mickey, a Gypsy bare-knuckle boxing champion with a notorious reputation.

Mickey impresses Turkish with his fighting skills, prompting Turkish to enlist him for the rigged fight that he's involved with local crime boss, Brick Top, known for his ruthless ways and pig farms that help dispose of bodies. Simultaneously, the stolen diamond ignites a wild chase involving various shady characters: Sol, Vinny, and Tyrone, a trio of small-time crooks aiming to snatch the stone; Avi, who flies in from New York to supervise the diamond's delivery; and Boris the Blade, a Russian arms dealer with his own agenda to intercept the diamond. As the paths of these characters converge, the entanglement of their ambitions weaves a tapestry of deception, theft, and chaos, set against the gritty backdrop of London's criminal underworld.