In early-1970s Las Vegas, low-level mobster Sam "Ace" Rothstein gets tapped by his bosses to head the Tangiers Casino. At first, he's a great success in the job, but over the years, problems with his loose-cannon enforcer Nicky Santoro, his ex-hustler wife Ginger, her con-artist ex Lester Diamond and a handful of corrupt politicians put Sam in ever-increasing danger.
With friends like these, who needs enemies? That's the question bad guy Porter is left asking after his wife and partner steal his heist money and leave him for dead -- or so they think. Five months and an endless reservoir of bitterness later, Porter's partners and the crooked cops on his tail learn how bad payback can be.