In a small town in the American West during the years of World War I, life revolves around baseball, and the local team dreams of glory in the championship. Amid this fervent passion, a young woman named Mary becomes the unexpected heroine of the community. The daughter of the team's coach, Mary is a baseball enthusiast who dreams of playing alongside the men, but she faces the rigid tradition that dictates women should not be on the field.
When the team finds itself in trouble due to a lack of players after many enlist in the military service, Mary decides to take a bold step and disguises herself as a man to join the team. As the season progresses, her skill in baseball impresses everyone but also triggers a series of misunderstandings and tensions, especially with Jack, the attractive pitcher who is unaware of the truth behind his new teammate.
Through comedic situations and moments of intense emotion, Mary struggles not only to keep her secret but also to prove that talent and passion have no gender. In a climactic finale, the team faces its greatest rival in the championship, where the outcome will not only determine the future of local baseball but also challenge preconceived notions about a woman's place in sports. A story of courage, identity, and an unbreakable love for the game.