Big Nick is back on the hunt in Europe and closing in on Donnie, who is embroiled in the treacherous world of diamond thieves and the infamous Panther mafia, as they plot a massive heist of the world's largest diamond exchange.

An aristocratic Englishwoman, Lady Cornelia Locke, arrives into the new and wild landscape of the West to wreak revenge on the man she sees as responsible for the death of her son.