Jack Manfred is an aspiring writer who to make ends meet, takes a job as a croupier. Jack remains an observer, knowing that everything in life is a gamble and that gamblers are born to lose. Inevitably, he gets sucked into the world of the casino which takes its toll on his relationships and the novel he is writing.
Swaying between pleasure and despair, Elric throws himself into his pathological passion for the casino. Meeting Suzie could have saved him, but the young woman also sinks into gambling hell. The couple then start getting involved in the fearsome world of professional cheaters.
When an international casino crime ring is planning a big score at a fixed roulette game, the casino police enlists the help of Jeff Miller, an alcoholic croupier, to nab the bad guys. Jeff is attracted to Laura, a singer at the casino, but she prefers the company of the leader of the thieving casino ring.
When illegal casino owner Charley Kyng develops heart disease, he is advised by a doctor to spend more time with his family. However, he finds it difficult to keep his work separate from his life at home. His son, Paul, feels ashamed of Charley's career and gets into a fight at his prom because of it. Meanwhile, Charley's brother-in-law, Robbin, who works at the casino, begins fixing games due to his extreme gambling debts.