Young man J.C. Cullen, nicknamed fool, lives in a small town with his widowed mother. During the day, he works in an auto parts store, but only after dusk does his life really begin. He always gambles in the secret room of a garage. Casinos and repair shops are owned by Carl Hooker. The man introduced J.C. Cullen into gambling, but cared about him like a father. J.C. Cullen, though addicted to gambling, is decent and simple in nature. He often wins at the gambling table not only by luck but also by his brain. Carl Hooker's all-young disciples hurried to the Big Vegas, which was Chicago in 1957. J.C. Cullen packed her bags and left her widowed mother and jumped on the bus to Chicago. Chicago experts are like a cloud, and all kinds of people live an incredible life here. He met the charming stripper Lorry Dane and her husband George Cole, who runs a secret casino. When J.C. Cullen's life was intertwined with these people's lives, he began to reflect on his cruel and ruthless casino career and wanted to change.