Willy Grogan, Gig Young is a small-time boxing promoter and innkeeper of Grogan's Gardens, a rough-and-tumble retreat in the Catskills’ Cream Valley. He’s in deep debt and treats the woman who loves him, Dolly, with scant regard. Lola Albright gives Dolly a smoky, watchful presence as she lives at the camp, hoping for a little more affection from the man she sticks by.
Walter Gulick, Elvis Presley, is a young ex-soldier who arrives in uniform, drawn to the peaceful, forested village of Cream Valley where he spent his childhood. A skilled auto mechanic, Walter finds a home at Prohosko’s Garage, where the owner gives him room to work on cars and indulge a passion for restoring old machines, including a dusty Ford Model T tucked away under a tarp that Walter eagerly begins to revive.
When Willy’s raven-haired sister, Rose Grogan, Joan Blackman, shows up from downstate New York City, the beauty and vitality she brings spark an immediate interest in Walter. Rose’s arrival unsettles the delicate balance at Grogan’s Gardens and unsettles Dolly, who feels replaced and overlooked by her boyfriend’s attention toward the younger visitor.
Walter, needing work, begins sparring with Willy’s trainees, catching the eye of the camp’s seasoned trainer, Lew Nyack, Charles Bronson, and his efficient assistant, Howard Zimmerman, Judson Pratt. Walter earns a shot at a real bout, earning the nickname “Kid Galahad” for his courtesy and steadfast conduct in the ring, and his growing confidence.
As Walter climbs in the rankings, a dangerous scheme looms: a syndicate controlled by the ruthless loan shark Otto Danzig, David Lewis, pressures Willy to fix the fight so the gamblers can cash in. Willy’s debts feed the threat, and the pressure tests his loyalties and the limits of his code. Walter, though initially reluctant, becomes determined to protect the sport and his new life.
The tension comes to a head when Danzig and his thugs threaten Walter and Lew, only to be confronted by Walter’s courage in defense of his trainer after they threaten him. The confrontation spills into a kitchen brawl, with Walter throwing his weight behind Willy’s camp and drawing help from the local authorities, including Frank Gerson, Ed Asner the assistant district attorney who investigates the case.
Walter then faces a grueling bout against Romero, a hard-fighting opponent known as “Sugar Boy.” The match is tough and brutal, but Walter, bloodied yet resolute, emerges victorious, earning Willy’s respect and the opportunity to step away from the ring on his own terms. The victory seals a new future for him and Rose, as Walter retires undefeated to the comforts of his restored Model T and the life he’s begun with the woman he loves.