J. Chalmers 'Pressure' Maxwell, Edward G. Robinson, is a suave convict who has decided to go straight after leaving Sing Sing, a plan that comes with one big caveat: his not-so-bright partner Jug Martin, Broderick Crawford, is still itching for a quick score. The pair are joined by their amiable troublemaker Weepy Davis, Edward Brophy, and together they watch Maxwell’s careful balance begin to tilt toward old habits again.
Facing a rejected loan that would fund his dream of buying a Florida dog racing track and running a legitimate business with his adopted daughter, Denny Costello, Jane Wyman, Maxwell is drawn back toward crime when the bank next door shuts him out. In a bold move, he buys a small luggage shop from Homer Bigelow, Harry Davenport, and schemes with Jug and Weepy to dig a tunnel from the basement—an old-fashioned setup that hints at danger, desperation, and the lure of easy money.
Meanwhile, a sharp-talking salesman named Jeff Randolph, Jack Carson, sweeps in and convinces Weepy to place a large order of suitcases to stock the new shop. Jeff’s charm soon wins the heart of Denny Costello, and she becomes a catalyst for a surprising pivot in Maxwell’s plan. Rather than rack up a bank heist, Jeff uses clever advertising gimmicks to drown out the noise of construction and demonstrate that legitimate sales can be an even more powerful lure than crime.
As the store begins to thrive, the bank next door steps in with an offer to buy the shop to expand its own space. Maxwell, sensing a shift in fortune, starts to entertain the idea of legitimate growth, only to be pulled back into trouble when Leo Dexter, Anthony Quinn, bursts back onto the scene. Leo’s discovery of Maxwell’s elevated status as a potential thief-turned-shopkeeper fuels tension, and he breaks out of jail with the plan to take over the enterprise.
The tension reaches a fever pitch when Leo and his cohorts prepare to strike a vault with dynamite on Christmas Eve. Homer Bigelow reappears, overwhelmed with nostalgia for his store, but is knocked out in the ensuing chaos, triggering the burglar alarm. Leo panics and makes a desperate move toward his gun, but Maxwell intervenes, and the ensuing confrontation leaves Leo unconscious enough to be captured by the authorities. The chaos culminates in a fire that engulfs the store, yet Maxwell manages to revive and drag Homer Bigelow to safety, emerging as the unlikely hero of the moment.
In the aftermath, Denny Costello accepts Jeff Randolph’s marriage proposal, recognizing a brighter, steadier future with the man who helped steer her toward honesty. Pressure Maxwell, ever the opportunist, now looks toward a new dream: building a small chain of stores, turning a once-delayed plan into a growing business empire that captures both the promise of legitimacy and the thrill of reinvention.