Millionaire John B. Harrison is finishing a two-year sentence in prison for income-tax evasion. Two convicts, "Rocks" Henry and Matty are planning an escape and going to kidnap Harrison. But Harrison's cell-mate, "Ace" King and his pay "Missouri" quell the attempted escape, and are granted paroles. Harrison decides to reward "Ace" with a high-paying job in the Harrison Food Productions Company. His family, with the exception of his daughter Judy, object strongly to the hiring of "Ace, but he does so anyway. When the newspapers start blaring such headlines as "Millionaire Harrison Puts Prison Pals on Payroll," his business begins to lose many accounts. But "Ace," who only took the job with larceny in mind, and "Missouri" employ some gangland methods to get the accounts back. After a month on the job, "Ace" is held in high esteem by both Harrison and Judy. He decides he can go straight and do alright, but "Rocks" and Matty have made good on another escape attempt, and have intentions of doing harm to "Ace."