In the heart of the Great Depression, set against the backdrop of 1932 New York City, 10-year-old Yankee Irving is on a quest for recognition on the baseball field. Though he faces challenges due to his limited athletic skills, Yankee finds comfort in his extravagant daydreams and a cherished friend, Screwie, a witty talking baseball with whom only he can communicate. His father, Stanley, tirelessly works as a custodian at the legendary Yankee Stadium. However, their lives take a sharp turn following a bizarre incident that sets a dramatic chain of events into motion.
One disastrous day, a clever thief, disguised as a security guard, makes off with Babe Ruth's cherished bat, Darlin', right under the noses of Stanley and Yankee. This crime leads to Stanley being wrongfully accused and dismissed from his job until the bat is recovered. Frustrated and desperate, Yankee discovers that the man behind this act is Lefty Maginnis, a sly pitcher for the Chicago Cubs, who operates under the ruthless Napoleon Cross.
Driven by the determination to exonerate his father and prevent their eviction, Yankee embarks on a fantastical adventure. He manages to retrieve Darlin' from Lefty at the train station but finds himself unable to escape the train before it leaves. Little does he know, Darlin' has a unique ability to converse with him, imploring him to return her to Babe Ruth in Chicago, where the 1932 World Series is on the horizon.
As he ventures into the unknown, Yankee encounters a vibrant array of characters, including hobos Andy, Louis, and Jack, who support him along his journey. He also meets Marti Brewster and her father, Lonnie, a seasoned Negro league pitcher who generously shares valuable batting techniques. Meanwhile, Stanley and Yankee's mother, Emily, begin their own frantic searches to find their missing son.
As tension escalates, Yankee embroils himself in a series of confrontations with Lefty, culminating in a breathtaking showdown where Darlin' is snatched away and handed over to Cross. The nefarious general manager reveals his malicious schemes, ensnaring Yankee in an office as time tilts closer to the World Series climax. Will Yankee's iron will allow him to restore his father's dignity, reclaim Darlin', and rescue their family from ruin?
In a gripping escape, Yankee deftly evades security guards and successfully returns Darlin' to Babe, who reminds him, > "it's not the bat, it's the batter" – a piece of advice that resonates profoundly with him. Fueled by Babe's encouragement, Yankee takes a swing at Screwie and connects perfectly after a few tries. As the Cubs players swarm to tag him out, he deftly dodges them, making Lefty his ultimate challenge. With a spectacular leap over Lefty, reminiscent of the earlier mishap that embroiled both him and his father, Yankee lands safely on home plate, scoring a pivotal run.
This victory ignites a new spirit among the Yankees, who go on to score seven additional runs and seize the championship in the World Series. However, the aftermath of Darlin’s theft sends ripples of consequences through the team. Cross is arrested for his involvement in the plot, and Yankee's own actions as an accomplice are brought to light.
With the dust settling, Lefty is removed from the Cubs and taken into custody as well. In an emotional moment, Stanley expresses sincere remorse for being overly critical of Yankee, commending him for his remarkable effort that has redeemed their family's honor.
In the joyous atmosphere following the Yankees' victory, Yankee is celebrated during a parade as an honorary player, sharing the spotlight with Screwie and Darlin'. Meanwhile, the formerly powerful Cross is reduced to selling Babe Ruth bobbleheads, and Lefty is assigned to community service, cleaning the streets. In a touching finale, Yankee enjoys a game of catch with Screwie and the hobos' dog, reveling in the happiness and friendship that accompany his hard-earned success.
