In 1973, sports handicapper and Mafia associate Sam "Ace" Rothstein is sent by the Chicago Outfit to Las Vegas, Nevada to run the Teamsters-funded Tangiers Casino, while Philip Green serves as the mob's hotel CEO front man. Sam doubles the casino's profits, which are skimmed by the mafia before taxes are paid. Mafia boss Remo Gaggi sends Sam's childhood friend and mob enforcer Nicky Santoro, Nicky's younger brother Dominick, and Frankie Marino...