Joe Kedzie is released from prison after committing a robbery. Only Joe knows where the money is hidden: at the bottom of a mine shaft out in the desert. Maxie and Madge find Joe when he goes to retrieve the money. He agrees to cut them in. Maxie gets greedy and Joe shoots him. Unfortunately, he also puts a hole in their only canteen. Joe lowers himself down the mineshaft with a rope to retrieve the money. He ties the money to the rope and sends it up. When he tries to climb out, Madge cuts the rope and he falls and breaks his leg. Madge tries to get away, but discovers that Joe has the keys to the truck.

小伙子J.C. Cullen绰号傻瓜，和孀居的母亲住在小城里。白天，他在一家汽车零件商店 工作，可只有在黄昏后，他的生活才算真正开始。他总去一家汽车修理厂的密室赌博。赌场和修理厂都是Carl Hooker开设的。此人将J.C. Cullen引进赌门，却又象父亲一样关心他。J.C. Cullen虽然嗜赌，本质上却很正派单纯，他在赌桌上常胜不单是靠运气更多是得力与他的头脑。Carl Hooker全年轻的门徒抓紧时间，到大赌城去，1957年，大赌城就是芝加哥。J.C. Cullen打点好行装抛下寡母跳上了去芝加哥的汽车……芝加哥高手如云，形形色色的人在这里过着不可思议的生活，他认识了迷人的脱衣舞星Lorry Dane，和她经营秘密赌场的丈夫George Cole。当J.C. Cullen的生活于这些人生活交织一起的时候，他开始反省残忍冷酷的赌场生涯，并想改变自己的生活。