Ace Corbin (Cary Grant) a charming Chicago gangster is acquitted of murder charges, which was framed by Pete Manning (Jack La Rue) decides to reform and begin a new life in California. On the train, he falls in love with Eleanor La Velle (Benita Hume) a gambler's girlfriend. They both conceal their true identities and have adopted new aliases. In Southern California, Eleanor discovers that her lover, Joe Burke owner of the Casino Del Mar steamer, which operates legally outside the three-mile limit from the harbor is in debt for $9,000. Because Pete Manning's thugs are ruining his business.