Sam Whiskey, Burt Reynolds, is a roguish adventurer in the Old West who is drawn into a high-stakes scheme by Laura Breckenridge, Angie Dickinson, a wealthy widow from a powerful Oklahoma political family. She convinces him to recover $250,000 in gold bars sunk with a riverboat that vanished from Colorado’s Platte River. The gold had been stolen by her late husband, Congressman Phillip Breckenridge, from the Denver Mint during an official visit and replaced with plated lead fakes. With the mint due for inspection in one week, Laura fears discovery and ruin for her family, and she offers Sam a handsome reward—$20,000—to return the gold before the truth surfaces. Laura, Angie Dickinson, makes her plea in a calm, calculating way, insisting that her name and lineage will be spared only if the gold is recovered intact.
To pull off the job, Sam enlists Jedidiah Hooker, Ossie Davis, a steady-handed blacksmith, and O. W. Bandy, Clint Walker, an Army friend turned inventive tinkerer, offering them a share of the spoils. The trio heads to the sunken riverboat, unaware that Fat Henry Hobson, Rick Davis, and his gang are watching their every move. The gold lies fifteen feet beneath the surface, so Bandy crafts a diving helmet from a bucket and bellows, turning a makeshift idea into a lifeline. But the plan goes sour when Fat Henry’s men capture Jed and Bandy, leaving Sam to believe he has been abandoned to his fate.
With a quick, dangerous mind, Sam hides aboard the riverboat in the half-submerged smokestack and waits for an opportunity. When the gang brings the gold aboard, Sam’s stealth and a hidden machine-gun—one of Bandy’s homemade devices—turn the tide, and he and his partners escape with the treasure. Destination Denver becomes the next battleground, but the odds shift again when Laura rendezvouses with them, offering blueprints of the mint to help them stage a more elaborate theft.
The crew then kidnaps a government inspector and assumes his identity as Thorston Bromley, Woodrow Parfrey, to gain unfettered access to the Mint. Inside, Sam deliberately damages a gold-plated bronze bust of George Washington displayed in the lobby, pressing for repairs so that Jed can mold it and recast the gold. The trio navigates the Mint’s labyrinthine spaces, posing as plumbers and infiltrating areas that are normally off-limits. As the guards close in, they use the smelter to recast the recovered gold into fresh bars and carefully stock the vault once more. All the while, Fat Henry’s gang remains close on their heels, driven by the prospect of an even bigger prize.
The Mint’s manager finally realizes something is amiss—the stolen bust is gone, and the shop’s activity has become a ruse. In the meantime, the gang discovers the counterfeit bust but fails to recognize its worthlessness, a twist that works in Sam’s favor. With the machine-gun still in play and the Mint’s defenses distracted, the trio makes a clean escape onto a waiting train, crossing into the dawn’s light as they head away from Denver.
On the journey, Sam divides the $20,000 with Jed and Bandy, honoring their contributions, but keeps Laura by his side, a prize of a different kind. The heist is messy, clever, and full of the crooked charm that defines Sam Whiskey’s world, and while the plan nearly unravels at every turn, he walks away with more than money: a dangerous alliance, a reinforced sense of self, and a complicated romance that lingers long after the last whistle blows.
