"Ore no My Ball" centers on the life of Haruto, a high school student with a deep passion for basketball, though his skills are far from exceptional. Despite his lack of natural talent, Haruto's determination and love for the game drive him to improve. The narrative explores his journey as he joins his school's basketball team, which is struggling to regain its former glory after years of poor performance. Haruto's relentless effort and unconventional training methods gradually earn him the respect of his teammates, though his progress is met with skepticism from rivals and even some peers.

The story delves into the dynamics of the team, highlighting the contrasting personalities and playing styles of its members. Key characters include the stoic team captain, Riku, whose leadership is tested as he balances his own ambitions with the team's needs, and Aoi, a talented but aloof player who initially dismisses Haruto's efforts but later becomes a crucial ally. The coach, a former professional player with a mysterious past, plays a pivotal role in shaping the team's strategy and mindset, often pushing them beyond their limits.

As the team progresses through regional tournaments, the narrative shifts between intense matches and personal struggles, emphasizing themes of perseverance, teamwork, and self-discovery. Haruto's growth is not limited to his basketball skills; he also learns to navigate complex relationships, confront his insecurities, and inspire those around him. The series balances sports action with emotional depth, portraying the highs and lows of competitive athletics while maintaining a focus on character development. Through its exploration of ambition and camaraderie, "Ore no My Ball" offers a compelling portrayal of the challenges and rewards of pursuing one's passion.